I apologize in advance at how long this is, but at this point I'm kind of desperate for advice since my PC has been down for quite a while. Specs: CPU Intel Celeron D 356 3.33GHZ Motherboard MSI P6NGM-FD LGA 775 NVIDIA GeForce 7100 Micro ATX Intel Motherboard Memory 2x1gb DDR2 800 SDRAM Videocard Radeon 4850 Soundcard/Speakers Onboard Hard Disk(s) Seagate 250gb 7200 RPM SATA Power Supply RAIDMAX HYBRID 2 RX-630SS 630W ATX12V V2.2/ EPS12V SLI Ready CrossFire Ready Modular Modular LED Power Supply Cooling MASSCOOL FD08025B1M3/4 80mm Case Fan Alright, here goes. Earlier in the month I got a new motherboard that I had to RMA, I wasn't sure where to put all the parts so most went into boxes but my CPU was stored in a zip-loc bag since I had no clue what to do with it. I've gotten the new motherboard and set it up (note: I did not reinstall any drivers or repair Windows since it was the same motherboard type and I already had drivers installed). The first time it booted up just fine and everything was working except for the fact that a brand new Radeon 4850 was getting no more than 25fps in games where it should be significantly higher. In addition when playing games, the system would freeze for a few seconds and then return to normal, also switching applications would take forever which is not an issue I've had with this RAM and Processor before. I decided to restart the machine to see if that would resolve anything. At that point it would not get past the BIOS screen. Once in a while if I hit <del> quick enough it would try to go to setup but would just hang at "USB Legacy Support is not enabled". The next day after work, I tried it again, using my old video card and it worked, then switched in the new card and it also worked. I took the time to run Memtest on all of my RAM, try each stick seperately, verified all fans worked and rebooted several times with no issue. The last reboot of the night after I put the case back together and stood it up brought back the same exact issue. I went to take the processor heatsink off and it was extremely hot to the touch despite the fact that all fans were working properly, I thought the issue may have been overheating, but tried it again this morning after leaving it off all night and I still cannot get past the BIOS startup screen without being able to get to BIOS setup. Help!