[ErgoS]

After years of total stability my pc started crashing with all sorts of bluescreens roughly every week since about 3 months ago.

I did not install any new hardware, and I cannot remember any particular new driver or software that could be responsible.

The error messages and driver names are all across the board, and I can never reproduce the problem afterwards.
Testing with RAM with memtest86, CPU with prime95, and GPU with FurMark did not indicate any error or produce a crash.

I am at a loss, does anyone know what else I could test?

Full BlueScreenView log at: http://pastebin.org/83611
Here are all the errors that occured:

PAGE_FAULT_IN_NONPAGED_AREA
*** STOP: 0x10000050 (0xf000ef5d, 0x00000001, 0xbf89a735, 0x00000002)
*** win32k.sys - Address 0xbf89a735 base at 0xbf800000 DateStamp 0x4a8417a6

IRQL_NOT_LESS_OR_EQUAL
*** STOP: 0x1000000a (0x8dcc2fcb, 0xd000001b, 0x00000000, 0x80827cd7)
*** kmixer.sys - Address 0xb4c7b860 base at 0xb4c65000 DateStamp 0x45d69cbf

KERNEL_MODE_EXCEPTION_NOT_HANDLED
*** STOP: 0x1000008e (0xc0000005, 0xbf8a433e, 0xb55ddb14, 0x00000000)
*** win32k.sys - Address 0xbf8a433e base at 0xbf800000 DateStamp 0x4a8417a6

DRIVER_IRQL_NOT_LESS_OR_EQUAL
*** STOP: 0x100000d1 (0x00002b44, 0xd0000002, 0x00000000, 0xb870a473)
*** USBPORT.SYS - Address 0xb870a473 base at 0xb86ee000 DateStamp 0x45d69ceb

MEMORY_MANAGEMENT
*** STOP: 0x0000001a (0x00003452, 0x351b5201, 0xc0919280, 0x4943c80a)
*** ntoskrnl.exe - Address 0x80827c83 base at 0x80800000 DateStamp 0x4a799091

SYSTEM_THREAD_EXCEPTION_NOT_HANDLED
*** STOP: 0x1000007e (0xc0000005, 0xbd16a898, 0xb75e6b9c, 0xb75e6898)
*** nv4_disp.dll - Address 0xbd16a898 base at 0xbd017000 DateStamp 0x4a891ca7

KERNEL_MODE_EXCEPTION_NOT_HANDLED
*** STOP: 0x1000008e (0xc0000005, 0xbd16a807, 0xb602aa84, 0x00000000)
*** nv4_disp.dll - Address 0xbd16a807 base at 0xbd017000 DateStamp 0x4a891ca7

SYSTEM_THREAD_EXCEPTION_NOT_HANDLED
*** STOP: 0x1000007e (0xc000001d, 0xbd16a88b, 0xb6312ba4, 0xb63128a0)
*** nv4_disp.dll - Address 0xbd16a88b base at 0xbd017000 DateStamp 0x4a891ca7

MEMORY_MANAGEMENT
*** STOP: 0x0000001a (0x00041284, 0xdf4d7001, 0x1c0c0600, 0xc0e00000)
*** ntoskrnl.exe - Address 0x80827c83 base at 0x80800000 DateStamp 0x4a799091

DRIVER_IRQL_NOT_LESS_OR_EQUAL
*** STOP: 0x100000d1 (0x0000a781, 0xd0000002, 0x00000000, 0xb76fd420)
*** tcpip.sys - Address 0xb76fd420 base at 0xb76e8000 DateStamp 0x4a8685a2

DRIVER_IRQL_NOT_LESS_OR_EQUAL
*** STOP: 0x100000d1 (0xffdc6ccc, 0xd0000002, 0x00000000, 0xb771ffff)
*** tcpip.sys - Address 0xb771ffff base at 0xb76e8000 DateStamp 0x4a8685a2

KERNEL_MODE_EXCEPTION_NOT_HANDLED
*** STOP: 0x1000008e (0xc0000005, 0xbd16a77f, 0x9c1bda6c, 0x00000000)
*** nv4_disp.dll - Address 0xbd16a77f base at 0xbd017000 DateStamp 0x4a891ca7

PAGE_FAULT_IN_NONPAGED_AREA
*** STOP: 0x10000050 (0xbf8da5aa, 0x00000008, 0xbf8da5aa, 0x00000000)
*** win32k.sys - Address 0xbf8da5aa base at 0xbf800000 DateStamp 0x49e867f5

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Download Everest using the link in my signature, install and run it. Click Computer > Sensor. Write down temperatures and voltages. Minimize the program and load the computer by running an antivirus scan. Let the scan run for 10 minutes or so and recheck temperatures.

[The Skeptic]

Download Everest using the link in my signature, install and run it. Click Computer > Sensor. Write down temperatures and voltages. Minimize the program and load the computer by running an antivirus scan. Let the scan run for 10 minutes or so and recheck temperatures.

[ErgoS]

i actually had everest already running, because I was testing something similar. here are the results:

idle

Motherboard	35 °C  (95 °F)
CPU	34 °C  (93 °F)
SAMSUNG SP2514N	24 °C  (75 °F)

prime95 running for half an hour + a virus scan:

Motherboard	34 °C  (93 °F)
CPU	43 °C  (109 °F)
SAMSUNG SP2514N	24 °C  (75 °F)

[The Skeptic]

Nothing suspicious here.

The randomness and relative rarity of the problem make it diffucult to spot. When you have such problems they are usually, but not always, because of faulty hardware or overheating.

Please advise how long you ran memtest? If possible, run it overnight.

Did you find anything suspicious in Event Viewer?

Did you run a scan of the hard disk?

I don't want to dicourage you but there is possibility that you will not find the problem until it shows itself more frequently. Another option is to reformat. If the problem doesn't show after that then it was software related and was solved. If it shows up again then we know for sure that it's in the hardware.

[ErgoS]

If at all possible I want to avoid a reinstall, especially if the problem is hardware related anyway.

I just ran memtest again for 9 hours: 5 passes without errors.

I could not find anything suspicious in the event viewer. At least there are no events immediately prior to a crash.

no disk errors according to chkdsk and smartmontools.

I guesss I'll just have to wait and see, unless there is something else I could test.

[The Skeptic]

Click Start > Run. Type sfc /scannow (please note the space before /) and click Enter. This command verifies that system files are intact and replace them if damaged. You may need the installation CD but this is not always the case. When the process end the dialog box just disappear.

I doubt if this is going to help but no harm trying.