Hey guys, first post here; I'm having a weiird weird issue with my system: Asus a8n sli mobo amd opteron 170 cpu 2gb dual channel ram (2x1gb ocz) ati 1900xt video card thermaltake toughpower 750wat psu 2 hd's in raid 0 (400gb total) 2 hd's in raid 0 (1.35tb total) Well, the computer started having issues at first with the ethernet card, it woudl sometimes not work, and after that, windows stopped recognizing it totally. Somtimes it would come back and ask for drivers, other time windows wouldn't recognize it. Until one day, i tried powering up the PC, and everything powered up fine, just my monitor kept blinking and couldn't show me anything at all. I thoguht it was a mobo issue so I rma'd it with asus (3 year warranty) and they sent me a new one. Lo and behold, everythings popped in and the same problem happens except this time i get a beep sequence 7 beeps and the 2nd / 3rd beeps are faster beeps. I have NO clue whats going on; as b4 , there snothing poppng up on the monitor, it just keeps blinking on standby yet everything is powered up, mobo, vid card fan, etc. Any help appreciated greatly!!