YTread Logo
YTread Logo

How to Repair a DEAD Computer

Feb 27, 2020
I have a

repair

and diagnostic video today showing an HP

computer

from one of my clients that has stopped working and I'm sure the fact that it's on the HP

computer

has absolutely nothing to do with it, now those of you Anyone familiar with my channel knows that I am not a fan of HP. I've often said that in the tech world I've shared with you that we say HP means horrible products, it's an internal thing that we text in the industry, although we share that I'm trying to get that information out to customers. This customer of mine has purchased several systems from me over the years, none of which have required

repair

s, whereas this HP computer requires repair from the same customer, so it's not up to me.
how to repair a dead computer
Brag and tell you how cool my custom builds are. You are misinterpreting if that is what you concluded. buy from Anyone one of the questions I often get is if I will ever show how to build a laptop and despite how many times I keep answering this question I keep getting it so I'm trying to find a smarter way to answer it. so i guess i'm only going to say this if you know of a place that sells laptop case motherboard everything that goes along with the screen to make a laptop send me the link and i don't mean to make a specific one. laptop I want to choose motherboards I want to choose batteries I am going to choose screen sizes I want to choose cases just like with desktops so if anyone is aware anyone in the world is watching this video if you are aware anywhere you sell enough laptop parts to build your own laptop plz send me that link until then stop asking me if i can build a laptop for you so i don't know if it's sarcastic enough for you guys but yeah i'll try to put it in there trying to make it clear and i think i'll have to re-member this part in this video so when i get that question in the future and i will i'll just point you to this video so i don't have to keep repeating so i don't have to keep repeating so i don't have to keep repeating it right so the client says this doesn't work when i ask the client what it means that it doesn't work so ok so what does that mean ok it doesn't do anything ok so this is one of the frustrations a tech has with a customer and it all depends on how you ask the question what happens when you push the power button nothing , so if you were to press the power button right now, it does the same thing as when everything is plugged in. yeah okay i got a

dead

computer it's interesting because coincidentally my number one most viewed video is how to fix a

dead

computer that's what it's titled I guess that's a good title so if this title sounds familiar to you that's why I'm reading it. because a title seemed to work fine and that video was shot years ago when i had the sd camera and just used the mic on the camera so the quality has improved a lot since then and its time to do an update and i have no idea what happens to this computer everything you are about to see is happening on camera as I am experiencing it for the first time so I hope in the process you will understand the mood when I take what I am taking if you ever have a problem with the computer that you want to self-diagnose or if it is yours or a friend of yours what is the diagnosis process, then the first part is that we have to verify what is the problem.
how to repair a dead computer

More Interesting Facts About,

how to repair a dead computer...

I did not verify this when I picked it up from the client. I just picked it up and said I'd take care of it. I want to get it back to my office so one of the first things I noticed here at the back is that they have an Ethernet port here and here right now this suggests to me that this is probably a 100 megabit per second port and this is a gigabit port also you'll see they have a video card down here and I have a video card here so I guess we won't be using any of this because it's probably all disabled except usb on audio everything else can be ignored, but at this point I'm just pointing it out because plugging a monitor into it won't do me any good plugging the monitor in here because I won't get an accurate diagnosis if I'm plugged in a lot of a video card that isn't, so we have to plug it in here.
how to repair a dead computer
I'm not going to use the network ports right now because when you're diagnosing a computer you just want the very basic things to be connected, you want to disconnect any printers, any USB drives, anything that isn't necessary for the computer to boot because sometimes Sometimes computers boot up when you unplug one of those things and there's no real diagnostic to do inside the computer at that point you have a bad device or a bad cable or something else is going on so let's check the problem because customers don't always tell you I'm telling the truth and I'm not suggesting that clients lie on purpose, but I think sometimes they do, but sometimes they just don't know enough to be able to explain the problem accurately and that's why they hired you to do it, so let's check so i have got my monitor out i have my dvi cable here we are going to plug it in right to my right should be the c video card right back here come on i got my usb keyboard mouse now you're all familiar with that we'll plug it in back here and finally we have the power cord so we're going to plug it in and i'll get a green light here on the back that tells me the source power should be working fine so far so good let me go through and let's turn on the keyboard and ok it's on good monitors all right we stand to the side press the power button oh well it turns on not what the customer described so i listen to the fans and i think this is probably what the customer is explaining is th Nothing happens here so Rydia starts her diagnostics regarding the hack to figure out what is causing this issue well first things is don't be too quick, don't be impatient, i want it while i'm talking, i'm actually biding my time. just to see if anything appears on the screen behind me and then once enough time has passed I'd say generally 30 seconds to 90 seconds it shouldn't take more than 90 seconds on average to see something then it's safe to assume or conclude at that point something is wrong internally and needs to be fixed this is not a software problem because we can't get to the software yet and I need to step back to say the first part after asking the customer what it is then the wrong thing to do is to determine if you think it sounds like a software problem or a hardware problem and i'm a really hard problem sometimes you just have to take the hard drive out of the computer or you don't have to physically take it out but take the cable out of it and plug in a hard drive spare and reinstall the OS and see if you can replicate the problem if the problem replicates on a fresh install it's probably hardware it's really that simple now for From all this chatter I'm doing, nothing's happening here but I find it interesting that the system turns on, turns on, but that doesn't automatically mean that the problem isn't our power supply.
how to repair a dead computer
I'm going to hold the power button down and see if it turns off after about 10 seconds and it does so there is some communication between the motherboard and the power supply that is running now before working on the insides of a computer It's important that you unplug it, people talk about being grounded, but they don't want a ground, not when they're working on the inside of electronics and grounding. If you have a short circuit, electricity will flow directly through your body and ultimately to ground. You are likely to suffer a very, very serious injury. ry or death and for that reason I cringe every time someone says you should have your computer plugged in and turn off the switch on the back of the power supply there are a number of problems with that recommendation the first is clearly this person is you're not an electrical engineer or have a formal academic electrical education and you don't need one to make a youtube video i mean look i'm doing the second thing is there is no power switch on the back of this power supply I am pretty sure.
HP saved about a quarter of a cent by removing it so you know those quarters add up and the reason consumers come back to buy these pieces of junk my opinion is that they are cheap and the reason they are cheap is because they are cheaply built so in this industry you really do get what you pay for there are some pc builders that will make a pretty good profit but they are very niche you know we are talking like Falcon Northwest and you know the aliens they use things like where there is much more markup overall regardless of whether you buy a $400 computer or a twenty four hundred dollar computer in most cases the markup you can get is about the 10%, the only reason I still build computers, it's clearly not for the money, but it's because of the fact that I enjoy it and of course the money comes into the swiss service Now the computers I build have a one year warranty, so I won't make any money on service for a year after I build it. so let's get back to the fact that I enjoy it and I also enjoy diagnosing it's basically an exercise and puzzle solving and I guess I like solving puzzles so let's go ahead and open up to HP but remember HP does something no one else does. otherwise all the screws they use are Torx bits in this case t 15 in many cases t 15 you can remember if you're ever going to work on an HP computer even to remove the side panel they don't want you there for God forbid if you saw what was in there and you knew what you were looking at you would realize you paid too much but anyways let's go ahead and take it apart that's going to be the first thing we need to do here and we'll start by just taking the side panel off let's go there we go let's see what we're working with well we've got a lot of dust in there first of all and the first thing I'm curious about where I'm drawn to is two things in particular one is the power supply and two is the video card for me , these and my experience are the most likely culprits what can cause this behavior it could also be a motherboard it could also be a CPU it could also be RAM it could be any component or cable in the system that is causing this so I'm going to get started just looking to see if this fan spins easily with my fingers and a lot of times on these video cards you can't turn that fan on or it takes a bit of effort and that's all I need to know in this case that fan looks like it's going to spin, ok i want to check that so i'm going to ng to turn this on and we're just going to look and see that all the fans are spinning as they should so with the cap off we're going to plug it in or again the DVI cable will be first and then we'll save the power cable for last and now I'm going to turn it on and I just want to check that our exhaust fan is spinning CPU fan is spinning video card fan is spinning and i'll look here at the back the power supply fan is spinning is a good start.
I don't know if you can tell. You just know there are big dust motes in here. This is absolutely dirty. Looks like we have two hard drives here and me that client really wants the data on the drives I really don't care if this is fixed or not but I just found out what it is so I'm going to hold the power button first to make sure After it's off, pull the cable, sometimes there can be residual power in the capacitors on the So if you pushed the power button, did you see the fan spinning at that time, even though nothing was plugged in?
It's like magic where that power is coming from, that power was stored in the capacitors and it will drain slowly, but if you're in a hurry, yeah, and take that video card out and plug another one in before it's used up those capacitors or given them they lose enough time on their own you might see a big spark and well you probably have to replace a motherboard and who knows what else probably a video card i am very specific with that example i might just wonder why ok so to get the video card out we get another T 15 so to get these cards out HP requires this little retainer plate to be removed and now the video card should just slide out of there ooh what is it ?
I'm not even sure what it is, I probably don't want to know, but I'm going to grab a spare. Any PCI Express video card should be fine for diagnostics, so I always have a few lying around, let me grab one. I'll be right back this is an old Radeon X 1300 it has 256 megs of RAM that's great Not because it's fanless it's completely silent and it's a great test card forthat I place it in any system. I know this card works. It will probably work for years and years and years. here and the PCI Express slot so you don't want to be too hard on them so it's important to line everything up correctly before adding the downward force to plug the card in or you could break the slot. just being aware of what your limit should be regarding the force and effort you put into installing the hardware.
I always say never force anything. I'm going to plug in the power here and turn on the video or I'm sorry. I just want to see if this makes any difference if we get any video and it's not working there's a difference nothing is happening so go ahead and power up the next thing I want to check is the power supply but before we get ahead I want to undo what i have done here i want to put back the original video card. it's off, put this back in and you'll see that these video cards just run on power from the PCIe bus, there's no power cord from the PSU like a modern gaming card would, they don't draw as much power, the better. about testing a power supply, first of all i don't recommend those power supply testers, i think they are a waste of time and a waste of money for me, a replacement power supply is cheaper, more accurate and faster so let me grab a couple diagnostic parts I use the most with PCI Express video cards and power supplies these are the most common things that go wrong with computers and it's very common for people to automatically assume that there's no point in testing the power supply because the system comes and I wish being a techie was really that easy but the fact is when you don't know what's wrong you have to test everything you can assume nothing now the The only two things I need to connect the power supply to are the motherboard power cables. that's the big 24 pin cable and the smaller cpu power cable here in the corner that doesn't block your view and then I'm going to put this here real quick I should mention that there are some manufacturers that like to use their own proprietary power supplies but you'll soon find out if you work on one because your connectors won't fit so you shouldn't worry let's see this should be cpu power here and that will go down here that's like that ok once again reconnect the video card and we're going to reconnect the power and turn it back on that won't work if i don't connect the power to the correct power source what he saw. ok you got it all ok all right t the hat is going down here make sure the switch is in the off position you don't want to shock yourself that wouldn't be fun turn on the switch now you'll see there's a little green light under here on the plate base you're identifying or confirming I'll put the word out that you have power so this is all starting the PSU fans running this is just a basic 500 watt Antec brand PSU and it's great again for Diagnostic technology.
I don't even mind putting this in a system it's not what you would sell your customer but it's just a great power supply so it's nice that it has a second life after its first life which was powering a computer for I don't know how many. years and now he's a little bit retired and he does this part time, very part time so this hasn't made any difference at all well that's interesting the system shut itself down I didn't do that that's very, very interesting so I'm going to unplug this and this is what I know so far most likely whatever the problem is it's not the video card or power supply and that's basically the diagnostic process is that we're figuring out what's not broken you get it because once we've gone through each of the components all we'll basically be left with if we go all the way down is the CPU and motherboard combination which will be all that's left and very I have rarely seen a bad CPU and these motherboards are so expensive you buy them on eBay they ship out of China in most cases you don't know what you are getting in regards to quality it just makes more sense to buy one new computer to repair this u One of the things I like about them so anyway I just want to try this one more time because I don't like the way the power cord was seated and I didn't realize that until I pulled the cord out of the Half of the little four pin addition just fell off and I expect it to have a little more resistance than that so I just want to make sure it's fully plugged in and it seems to be all the same nothing has changed so what do we do now? this and there and that and we'll leave this here for now so I'm just going to put it back as it looks like the power supply is ok the video card is ok what's the problem? next step the next step is we might have a problem with the hard drives or anything attached to the motherboard so i want to go ahead and disconnect these hard drives back here this is really tight back here there uh everything there are two drives you can I don't see the solid state drive behind this.
Apparently we have a storage drive on a boot drive and this thing has been through a lot of updates. I think even the storage drive wasn't in stock because this is a black Western Digital and black Western Digital drives are known for performance, anything that is known for performance will cost more. I'm guessing it was upgraded RAM wise we have four bars of RAM here and that could also be a problem if one of those bars is bad they could create a situation where the system won't even post and post of course is The power-on self-test is the first thing you see every time you turn on any computer.
I am also going to unplug the optical drive for exactly the same reason as if the optical drive circuitry has been damaged or failed in some way. so of course you could prevent the whole system from booting now if you could just remove the SATA cable you can see how tight it is there are easier ways to do this but I'm just trying to do it quickly for the camera ok now we've disconnected disconnected all the drives on the motherboard we don't have any unnecessary components plugged in the back in fact i'm even going to unplug my keyboard and mouse dongle because i've seen that cause systems to not boot and let me grab my cable power again let's go back to the power supply and try again ok nothing is changing so we know it's not the power supply it's not the video card it's not any of the drives or SATA cables , you see how I'm working my way. in this chain are you starting to understand this or did you get it the first time so i might say the third time later just to make sure all is well so now the question is where do you go from here well i don't we make.
I need this network card and this network card might be causing the problem so I'm going to pull out the network card and plug the cable back in now you don't have to do it one at a time I could have just pulled out the drives on the cable network and if the system had booted I just wouldn't have known which or If those things, it was just one of those things when you do one thing at a time when you get a result you know what the last thing you did was however , it takes more time, so there is no right or wrong way to do it. as long as i come to the proper conclusion in the end obviously none of this makes any difference so another thing we can try to do is clear the BIOS on the motherboard and i'm just looking on the board to see if it has some sort of jumper to clear the BIOS and this can happen from time to time when the BIOS just gets corrupted or sometimes a low power situation like a blackout can cause a little spike and then the BIOS gets confused and causes the corruption and when that happens, in most cases, you can get it back.
Usually there's a little jumper on the motherboard to clear the BIOS and I'm just looking for that right now and I don't see it but I see this battery here and this little battery when it goes bad there the thing the battery keeps the date and time, it also keeps your entire PC setup like what hard drives you have and things like that, and those batteries don't last forever, though they usually last three to seven years in most cases, so I'm going to get a small jeweler's screwdriver. We're going to remove the battery and let the motherboard settle.
Let it drain well. I've got my little jeweler's screwdriver here and I'm going to reach over and push this. There's a little lever right above the battery that holds the battery in place, it sits on top of it. I lift the battery and it comes out. Now there is our battery. Now I have to find my battery tester. If you are familiar with my previous videos that you have seen me use. this before is just a cheap battery tester i bought on eBay. I think it came from china or something for a couple bucks but it gets the job done. completely dead could be replaced but it's not completely dead and it's not in the red zone so i would say it's not a battery problem we may even cross it off our list of things that are possible causes for this problem of course we want to check we obviously don't have power here. with the power switch we want that CMOS or that BIOS.
I want to confuse him. The CMOS has the bias. CMOS is a complementary metal oxide semiconductor and a BIOS is a basic input/output system, but you don't need to know that they're just so often related when people mention CMOS or BIOS, sometimes there's even UEFI on the last many times they refer to what we are talking about here, what I refer to as the BIOS, even if it is UEFI. I still call it BIOS, but anyway, again, you don't need to know any of that stuff unless you want to be a professional techie and are in for a test.
I would never say that a client asked me. me but I guess I'm not sure customers have asked and usually when I tell them what m means it doesn't help at all but anyway I'm going to let this sit for a minute to make sure let the BIOS time out and it will come back and put the battery back in and we'll see what happens ok ok hope we gave enough. time In fact I'd be in a perfect situation if I had more time and if I wasn't making a video of this I'd probably let it sit for at least an hour it's only been about five minutes but that really should be plenty of time with the keyword the be should just put the battery back in and the bottom of the battery goes in under the clip first and then when you push right in the top it should just do it should just go in what it didn't sound like it did, Let's try again there though, turn the batteries back on, hit the switch, see if we get anything, keeping in mind that after the BIOS reset, it might take another 10-20 seconds for the system to boot into the first one. time as you have to figure out what hard drive you have and stuff like that of course you'll need to reset your date and time for sure and then any other customizations if you had any and if you don't know then just leave everything else alone and this won't seems to have been done to have made any difference at all so the next thing i would check would be the ram so i'm going to pull the power you'll see when we wait for the fans to stop and i'm going to hit that power button again, oh well nothing.
It happened and I'm going to take two sticks out of this Ram and there's a blue channel in a black channel and I'm not sure if they're paired the way they look next to each other or if they're paired in systems like I've seen build where opposite oh wait it tells me up here dim one dim to dim three dim four let's take out three and four that's going to be these two here at the end and let's see if this makes any difference you'll see I'm touching on the case of touching metal make sure it's grounded I'm also a Possible to try to handle RAM by the edges but on this RAM holding it by the top of the chips trying to avoid touching anything metal and of course with one hand on the casing then i dont have to use an anti-static strap plug back in yes we can turn it back on ok something different happened it booted ah its one of these two it may as well be the socket , it is also possible that it occurs when go called chip trace over time, where the chip starts working. out of its socket, although there are retention levers here that hold the RAM in place, you just can't rely on it, so once again press the power button and make sure all power is drained.
We're going to put a ram module back in it doesn't matter if it's coming from the same socket or not I'm just doing this because this is the old one it'll be easier to plug them in next to each other than trying to go in the middle so I'm going to plug that module back inRam and turn on the system. em turned back on and it looked like the fans just slowed down it's booting up fine that means this ram module is bad or it wasn't seated right if it still boots to this ram module that means one of the two was not seated correctly and they need it removed if i plug this in and it doesn't work this is the problem so plug it back in turn it back on and here we go we're about to have the answer to this problem in moments it's exciting because nothing's happening yet nothing still nothing you think you think i've waited long enough it must have two four six gigs that have eight or well the way it says it could be interpreted in one of two ways it's part of a 2 gig kit that would be there the pair equals two gigs.
I'm going to assume this is two and I had a total of two four six eight gigs of RAM which I'm assuming was also upgraded. I don't know. I don't think HP came up with this, but maybe it did, but this seems to be our culprit anyway. I already heard that the fans slowed down now, so what was I saying? Yes, once we plug all the hard drives back in, I'm sure it will boot up and work properly and the client will be able to get the data they want. turn it off and then continue to use the computer or remove it as they see fit.
I would say remove it because I think you are going to experience more problems as the computer ages now from the old memory module. destroy this and the reason i destroy it as i never want it to be a problem i have to adjust hosts in the future sometimes when you throw things away people take them out of the garbage and then somehow it's over coming back to me in the future as something i need to fix again so to avoid that i just take this and rip it in half that will never happen and that's what this diagnostic video is going to end with it was really that simple and now you understand what goes through my head when i try to figure out what is wrong i hope you enjoyed it i hope you learned from him i hope it empowers and encourages him to diagnose his own system or the system of a friend and solve that riddle.
It's a great feeling when you get the answer and when you get the answer without any help and on your own. I have been taught the right things to look for, you are no longer dependent on others, you are more self-sufficient and as a result the way you feel when you have achieved it is beyond words so once again thanks for looking if i enjoyed the plea video make sure to hit the like button and also hit the subscribe button if you want to get an email every time i post a new video you will be the first to know if you already subscribed and you are not getting those emails check your subscription to me and make sure the little checkbox for sending emails is checked and that's the whole point of subscribing too if there are any videos you'd like to see be sure and let me know in the comments below and of course any feedback is welcome as long as it's friendly, we're trying to create a community where we all support each other so anyone who feels to you just want to belittle and put people down don't even bother leaving a comment because they will delete it. but anyway, thanks so much for watching, see you next time and bye for now.

If you have any copyright issue, please Contact