Locking up on startup

Okay, so I built this computer 2 winter breaks ago, with only minor problems since then. Recently, I came downstairs one morning and it was on stuck at the Phoenix AwardBios v6.00PG. It won't go farther. After a couple days i pressed the red CMOS reset button on my mobo, and that seemed to work. Then, later that day i was prepping my computer for a W7 upgrade, removing ATI catalyst manager and that sort of thing, and I need to restart it again so the changes will take effect. Guess what? the same hang up at the Phoenix etc screen happens. Tried the Cmos thing again, but nothing happens. Any ideas?

Rig:
Silverstone 1000W PSU
X58 EVGA SLI mobo
ATI SAPPHIRE 100259-1GL Radeon HD 4870 1GB 256-bit GDDR5 Video card
OCZ Platinum 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 RAM
Intel Core i7-920 Bloomfield 2.66GHz 4 x 256KB L2 Cache 8MB L3 Cache LGA 1366 130W Quad-Core Processor CPU

Sounds like you have a hardware problem. Start by disconnecting hardware not needed at bootup and removing all but one stick of ram. Remove hard drive as well to see if you have a failing HDD.

Thanks, will do ^_^