I have a bit of a problem with my home-built PC at the moment. It's been working fine for over a year but in the last few days has started playing up.
I was using the machine the other day when the screen suddenly proze with a display of large pixels in primary colours. On attempting to reboot the POST would not get as far as the RAM check before crashing.
So.... I assumed I might have a RAM issue and proceeded to test the 2 sticks independently of each other and both seemed to be OK. I then reinserted both sticks to see if it was just a problem with badly seated sticks and, hey presto, the machine booted up and worked OK for the whole of that day.
Then the next day I booted up the machine, started up an EVE Online session but then got called away for about 30 minutes. When I returned the screen had gone black but the PC was still powered up. I rebooted and then the same thing happended about 15 minutes later.
The machine has good ventilation and it hasn't been that hot weather-wise.
Is this more likely to be a problem with failing RAM, a Graphics Card approaching death or something completely different.
Any pointers you can give me would be greatly appreciated.
since the screen suddenly froze with a display of large pixels i would go for the graphics card or driver theory. Can't see a psu doing that. If you have a graphics card try uninstalling the drivers and then use onboard graphics for a while to try to elliminate it.