I built my wife a brand new PC for Christmas. Unfortunately, it is having problems right out of the gate.
Specifically, at seemingly random times, it appears to just "die." In other words, the screen goes black, the keyboard and mouse have no power (as indicated by the lights going off), and not even the buttons on the front of the PC like reset and power will respond. You have to power off the system with the switch built on to the power supply and then turn it back on. However, when this happens the system still has power, as all of the fans in the system continue to spin.
I've tried running various diagnostic tests, but I can't nail down a problem because it keeps happening at random times, even during the tests, regardless of what device is being tested. I can't get a single consistent test result to pin the problem on. I've tried shuffling the RAM sticks, trying it with only one stick of the pair, etc., and that makes no difference. I added additional fans in case it was overheating. Nothing.
Any suggestions? I know I've gotten some bad hardware that I need to exchange, but I can't even isolate what hardware it is. I don't know if it's CPU, RAM, power supply, motherboard, etc. I've never seen this set of symptoms before.
Specs of System:
AMD FX-8350 Eight Core 4 GHz CPU
MSI 760GM-P23 ATX Motherboard
Ultra LSP-750 750 Watt Power Supply
Cooler Master Elite 430 Mid-Tower ATX Case
Patriot Gamer 2 Series 16 GB DDR3 1333 MHz RAM (2 x 8GB)
Transcend SSD-320 64 GB Solid State SATA Drive
Western Digital VelociRaptor 250 GB 10,000 RPM SATA 6 Gb/s Hard Drive
Floppy Drive & USB 2.0 Card Reader Combo Drive
LG 12x Internal Blu-ray Combo Drive (SATA)
ZOTAC GeForce GTX 660 2 GB DDR5 PCIe Video Card