My system is about 5 years old now (system specs below). Last March I upgraded the graphics card and switched out the motherboard. I replaced the motherboard because last year the computer kept powering off and refusing to power up for hours. This was a rare occurrence but this combined with the fact that two usb ports and the firewire were dead (I killed them by shorting some pins during the build). So I figured the mobo was finally giving up and replaced it and upgraded the graphics too.
Now suddenly this week any time I put my system under load it either reboots or just powers off (like a switch is thrown) and wont power back up for hours like before. I've also had a few "blue screens of death". I ran HWmonitor while playing ME3 to
see what the system did under load. The CPU was running between 60-63C, which I'm not thrilled with since the fan wasn't at 100% so I need to play with fan speed settings. The GPU was 65C. Other temps in the system ranged from 45-55C. Warm but not terrible (though I'll be tweaking to get them lower).
The one stat that caught my eye was the -12V rail was running at -7.62V. If this is a real value, and not some software glitch, I would think this is a huge problem and a red flag my crappy Ultra X has finally 86'ed itself.
But I could use some help because I'm still a bit of a novice at this and I might be missing that my CPU will crash at 65C or its something else I havn't even considered. Thanks in advance. I've always found the best help here.
Also the PSU I'm thinking of getting is a Corsair tx 650w.