I recently built my new Pc. Everything was fine and working for about two days. I was playing some games then got off and went to the store. When I came back I tried to "wake" my comp up but it would not, the CPU, GPU, Case fans; and case lights were still running. But I had to signal to the montior. After trying a couple of options I found that none of my peripherals (wireless mouse and keyboard) were working either.
Double checked that all connections from PSU to Mobo were in fact connected and in thier approriate locations.
Made sure there were no wires interefering with operations.
Double checked optical cables to ensure they were working properly.
Reseated CPU and made sure there was not an excess of thermal paste.
Reseated RAM units.
Checked capacitors on MOBO.
Installed new CPU AMD FX 8320.
Installed new GPU MSI TwinFrozr 7850.
Installed new CPU after finding out I may need to update BIOS to a more current version to support the FX series. AMD A4-3400.
Took out and reinserted CMOS battery.
Slammed head on desk repeatedly for 5 minutes...
System Specs: /Denotes variants tried to facilitate a sucessful boot.
CPU: AMD FX-8350/ AMD FX-8320 / AMD A4-3400
MOBO: ASrock Extreme 3
RAM: G.XKill Ripjaws X DDR3-1600 (x2-8gb)
PSU: NZXT- Hale82N 650W semi-modular.
GPU: Sapphire Radeon HD7870 Ghz / MSI Twin Frozr Radeon HD7850
OPD: Lite-on DVD/RW
Storage: 128GB Sandisk UltraPlus SSD, Seagate Barracuda 1TB 7200 HDD