Computer stops responding and turns itself off

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gamedemon

gamedemon

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Jun 18, 2013
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I'm having a major problem with my computer and I need some help. Sorry If I posted in the wrong place.

I built my first computer last June and it was working fine until last week when, out of nowhere, it stops responding. I was watching a youtube video at the time, and first the video and audio started to become choppy, followed by the whole system freezing. It would stay like that for a few minutes, then shut off. No blue screen. This happens every time I turn on the system.

That was a week ago, and it's gotten a lot worse since then. It used to happen a few minutes after startup. Now I can barely get past the bios screen before it freezes.

So far, all I've been able to do is re-seat the ram, and replace the PSU, which was suggested by people at Microcenter. Neither worked.

Here are my specs:
Asrock H77M
Intel i5 3470
Sapphire 7850 1gb OC
Windows 8 OEM 64-bit
WD Black 1tb
Team Xtreme Dark Series 8 gb 2x4gb
Old PSU: Corsair CX500M
New PSU: EVGA Supernova NEX750B

What do you think it might be?

-Mike
 
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gamedemon

gamedemon

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Jun 18, 2013
15
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10,510


I'm using the COOLER MASTER Hyper 212 Plus. Are you suggesting it is a overheated CPU? Because I was thinking about swapping out the CPU fan. But do you think a minute or too is enough for it to overheat?

edit:
Also, the system won't stay on long enough for me to check temps.
 
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Onus

Onus

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Jan 27, 2006
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Are you overclocking? Reset your BIOS to defaults, to make sure an excessive overvoltage isn't being applied. The Hyper212+ is better than the stock cooler, and screws down, so it should not have loosened. You may wish to remove it, clean off the old paste, then re-apply thermal paste. Use 91% isopropyl alcohol for the clean-off, and something like Arctic Silver AS-5 for the new paste.
 
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gamedemon

gamedemon

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Jun 18, 2013
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I removed the Hyper212+ and cleaned the CPU with the isopropyl alcohol. I installed the stock cooler (I could change it back later), and the problem is still happening. This time I got a message, which I took a picture of...

5roym.jpg


After that, it sent me to a page to recover windows, but it froze and shut off before I could do anything. I guess this means all this rebooting has hurt my PC.

I'm starting to fear that it is a problem with my cpu or mobo. If so it will take a while for me to be able to afford replacements.

I'm not overclocking btw. When you say resetting the BIOS, you mean clearing the CMOS right?
 
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badboyrog

badboyrog

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Jul 27, 2013
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''I removed the Hyper212+ and cleaned the CPU with the isopropyl alcohol. I installed the stock cooler (I could change it back later), and the problem is still happening. This time I got a message, which I took a picture of...''

dont put stock cooler....
do you put new heatsink paste on your cpu?
can you press the DEL button on splash screen ... and do have acces to bios screen after pressing DEL button???

 
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gamedemon

gamedemon

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Jun 18, 2013
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The stock cooler had paste pre-applied. I plan on re-installing the Hyper212+ eventually, I just thought it would be better to test it with a different one.

I can get into the bios, but not for very long before it freezes.
 
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gamedemon

gamedemon

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Jun 18, 2013
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That's what it's starting to look like to me.

Do you mean gpu or cpu?
 
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gamedemon

gamedemon

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Jun 18, 2013
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Sorry I didn't reply. I haven't had time to work on this until now.

Ok, so I removed the GPU and my computer actually started working fine. I thought the problem was over until after about 30 minutes when the computer just froze. It didn't turn off though. I had to force close it.

To me this suggests the motherboard. Do you have any other ideas?
 
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md1032

md1032

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Dec 31, 2007
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Did you use a conductive thermal paste on anything? Are all of the temperates good? Monitor every temperature sensor you can with speedfan and keep an eye on it when you use the computer. Double-check that every driver is up to date. On-board video, chipset, network, audio, etc. Run a chkdsk on your HDD (the long kind where it checks every sector, sorry)!

It is possible that it is a software issue. In this kind of scenario I usually start from square one, which means disassembling and reassembling everything and reinstalling windows, but I'm not sure how much you care about what's on your computer. Let me know if you are OK with giving it a shot and I will provide troubleshooting and diagnostic tips. I won't lie, I have never encountered a problem like this. In my experience hardware problems tend to be pretty obvious. The fact that it is hanging and not actually shutting off or throwing a blue screen is very strange indeed.

If your CPU or motherboard was bad, I don't think you'd be able to get into the UEFI.
 
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gamedemon

gamedemon

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Jun 18, 2013
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Temps seem fine. They don't go past 36c, and I don't see a spike right before it freezes. That's with stock cooler.

I'd like to try reinstalling windows. But chances are it will shut off before I get the chance. How would I do that, just run off the windows cd. If I reinstall windows, I don't have to buy another oem activation code right?





 
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badboyrog

badboyrog

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Jul 27, 2013
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wait before reinstalling windows!!!
do you check if you have a virus problem?
did you check for a burning spot on your motherboard?
can you try to reseating every hardware?
did you try to use only one memory stick?
 
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gamedemon

gamedemon

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Jun 18, 2013
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I just ran my system with the bare essentials... Mobo, cpu w/fan, one memory stick, psu. So no hdd, gpu, dvd. I tried it twice with one memory stick at a time. both times the system turned on into the bios and froze soon after.
 
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gamedemon

gamedemon

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Jun 18, 2013
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I was afraid of that.

How do I go about swapping a mobo? I have no problem with the installation, but how do I get windows working? I know I probably have to buy the oem activation again. Do I lose any data or programs (like photoshop) from my hdd.
 
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