Computers fucking hate me!! Brand new build. 4 Days old. Everything stock. Has worked flawlessly up until now. I turned it on and it booted for about 20 seconds and then shut off. I tried to turn it on again and it wouldn't boot. I turned the PSU off and let it sit for ~5 min then tried to power it on again. It boots, but again, only for about 20 seconds. I have tried resetting the CMOS. Makes no difference. I have tried each stick of RAM individually. No go. What gets me is that nothing has changed. I hadn't touched the thing in about a day and I sit down ready for some BC2 and this happens. Help please?