Windows 7 freezes up after 45 – 60 minutes of running

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kamta_prasad123

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Dec 17, 2014
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Hello Everyone,

I'm having a real problem with my computer – long story short, Windows 7 freezes up after 45 – 60 minutes of running. It doesn't matter what programs are running at all: Firefox, games, VLC, Open Office. The active window freezes, the cursor spins as if something is processing then eventually disappears, and everything stops. I cannot use Ctrl-Alt-Del to get to the Task Manager. There is no responsiveness at all, and I have to hold the power button down to turn everything off then back on again. If I use the reset button, the computer doesn't boot. It says something about needing a valid boot disk and doesn't detect any of the hard drives. When the computer restarts, it shows the “Windows did not shut down properly” menu. My keyboard is unresponsive and I have to wait until the timer counts to zero for the computer to continue booting. These problems started happening about a month ago. The computer has been together for almost two years with no problems until now.

Solutions I have tried so far include: reinstalling Windows 7 on a different SSD and the same problem occurs. I have also run Memtest86 and no errors were found with the RAM. I let it run overnight and it was still running in the morning. I don't believe it is a heat problem as I shutdown and immediately turn the computer back on. I don't think it is a virus as my virus checker comes up negative – and why does it still happen if I reinstalled Windows?

Could one of my video cards be bad?

Windows is fully up to date. Full system specs are listed below. Any help or suggestions would be greatly appreciated.
 
Solution
H
http://www.tomshardware.co.uk/faq/id-2344969/enable-hpet-fully.html
try applying this fix.
it still amazes me that people discount hpet as a root cause of random restarts. oh it cant be that, its so simple. but a lot of windows 7 functionality actually relies on it for timings.
i bet if the op looks in his dumplogs he will find multiple 0x00000000 error codes that basically point him all over the shop. this is a good sign that hpet is disabled in bios.
i have good reason to think hpet is the root cause because the op is describing typical behavior. the system is stable for minutes to hours and then for no apparent reason just crashes. its literally looks random but more often than not it just cant find the correct sync timings so falls...
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HEXiT

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Mar 13, 2011
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http://www.tomshardware.co.uk/faq/id-2344969/enable-hpet-fully.html
try applying this fix.
it still amazes me that people discount hpet as a root cause of random restarts. oh it cant be that, its so simple. but a lot of windows 7 functionality actually relies on it for timings.
i bet if the op looks in his dumplogs he will find multiple 0x00000000 error codes that basically point him all over the shop. this is a good sign that hpet is disabled in bios.
i have good reason to think hpet is the root cause because the op is describing typical behavior. the system is stable for minutes to hours and then for no apparent reason just crashes. its literally looks random but more often than not it just cant find the correct sync timings so falls over.
 
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Solution
bgunner

bgunner

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Feb 13, 2009
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I recomend doing some more stress testing. Use prime95 for 6 hours, Intel Burn Test set to 20 runs and maximum ram. IF both of these pass the CPU is good and stable. Next try OCCT's GPU test with error checking enabled. I am not sure if this will test an SLI/Crossfire setup but you can test the cards separately to see if there is an issue. Run this test for 30 to 45 mins per card. IF you pass this test, no errors, the cards are good. make sure your HDD smart sensors are reading good values by running HDDscan3.3. This program can even test the drive/s. IF this test is passed then you may have a voltage issue/bad setting the the Bios or possible bad PSU.

because you have reinstalled the OS with the issue remaining it is a hardware issue/Bios setting.
 
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GhislainG

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Jul 16, 2008
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http://msdn.microsoft.com/en-us/library/windows/hardware/ff542202%28v=vs.85%29.aspx The note says "This option should only be used for debugging."
 
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bgunner

bgunner

Judicious
Feb 13, 2009
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I agree that HPET is important to Win 7 but once the OS is completely reinstalled, this rules out any software issues and brings the troubleshooting process to hardware and or bios settings.

@OP are you running more than one HDD/SSD? IF so run just the drive with the OS on it, for testing purposes, to be sure that there is no software on a previous drive causing the issue. While I agree that debugging/trouble shooting is necessary in some situations, after the OS is reinstalled this rules out an OS issue and leaves other software as long as you are using a multiple drive set up or if not just hardware /bios issues.

are you getting any errors in event viewer other than the normal "windows has shut down unexpectedly" and ' the system was improperly shut down errors from your crashing? This is where debugging should begin.
 
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