I wasn't sure whether to post this here or in the hardware section. Hopefully someone can move it if needed.
As for the problem, the computer simply clicks off, rather like a desktop that has had the power cord yanked, then restarts a second or two later. Sometimes it will do this several times in a row without ever getting through the BIOS screen, so I don't imagine it can be a virus or other software issue. The problem only ever starts when I've been playing a graphics-intensive game for at least a couple hours, but watching my temps in speedfan never shows anything even reaching 90C. I'm wondering if it could be a heat issue in some part of the system that isn't getting picked up by speedfan but is still monitored in some other way. Another weird thing is how inconsistent the problem is: It happened frequently for about a week, then not once for over a month prior to starting again yesterday. All I can really say for sure is that it definitely seems related to placing a heavy load on the GPU.
I'll be opening things up for a thorough cleaning tomorrow after I buy a set of jeweller's screwdrivers to replace the ones I left back state-side (I'm currently in Japan). In the meantime, does anyone have any other ideas as to what could be causing this? I've also noted that my ridiculously huge power block can get hot enough to hurt, but the shutoffs have occurred even when it is still fairly cool. I'm also wondering if I should try replacing the thermal compound on the GPU given the custom nature of the system, but that would have to wait quite a while for me to order the necessary material.
Any advice or suggestions are welcome.
Edited by hamluis, 11 May 2013 - 12:57 PM.
Moved from Win 7 to Internal Hardware - Hamluis.