I recently noticed that the temperature in my hard drive enclosure was undesirably high so I opted to buy a new case to sort out my airflow issues. As I was transferring all my components, I felt it would be a good idea to remove all the dust I could with alcohol, microfibre cloths and compressed air, whilst also redoing the thermal compound on both my cpu and gpu.
Since reassembling the machine I have been plagued with random hangs/restarts, mostly without a crash dump or log in event viewer.The odd thing is that they seem to happen during less intensive periods. Examples such as the logon screen, playing music through MPC, idling but having data accessed through a shared drive over the network, the system being moved slightly or removing a usb wireless adapter. On the other hand I'm perfectly capable of playing games or running prime 95 for 5 hours without experiencing any of these problems.
This doesn't appear to be related to heat, as during stress tests the cpu peaks at about 55c and the gpu at 80c. My CPU is overclocked, but has been stable at these speeds for 2 1/2 years previously and as previously mentioned had no issues with a prime 95 test or other intensive applications.
I'm currently running memtest just on the off chance that one of my modules has gone bad, but so far i'm not seeing any errors.
Edit: I just remembered that on a couple of occaisions after crashing during the boot sequence I've been forced to use start up repair to fix missing bootmngr and ntoskrnl, though I assume this is due to corruption from the time the crash happened, rather than an indicator of a cause.
Edited by Mazrim, 11 March 2013 - 04:03 AM.