***Edit**** solved by simply cleaning the darn thing. CPU was overheating.
I have a PC with the following:
Motherboard with integrated graphics (forgot the model number right now)
E4300 Core2 Duo
250GB HD for OS
LSI MegaRaid PCI card with 6 SATA drives in Raid 5
DVD-RW Dual layer
This PC has been working great for 4 years as a "server" for pictures, movies, etc. It stays on 24/7. Recently it has started dying in the middle of use randomly. I'll be updating iTunes or something and it will just turn off completely. No BSOD, no beeps or alarms, just turn off. Upon trying to restart it would get to the windows loading screen then restart itself, only when it tried to restart, it would just sit there with all the fans on and CD trying to read, but no video signal and no HD activity.
I could then manually hold down the power button, unplug the unit, then plug it back in and it would startup okay.
However, as of last night, I can no longer start the machine. It will get to the windows loading screen then warm reboot and hang with all fans etc on. Even pushing the reset button can not make the machine actually restart. I have to push and hold the power button to power cycle and start all over. Unlike before though, no matter what I do, I cannot get into the normal Windows bootup.
I tried booting into safe mode and was able to get into safe mode, but within a few minutes the machine would just die.
I was able to check the CPU temp in the bios and it was reasonable at 50C. I haven't had a chance to do any other troubleshooting since this all happened at about midnight last night.
I'd love to get feedback on a testing strategy and help on getting this resolved if at all possible.
Edited by trpltongue, 13 April 2011 - 07:53 PM.