Hi! thanks for any help in advance
ill start off with the specs for my two computers
comp 1:
1 x APEVIA X-CRUISER-BK Black Steel ATX Mid Tower Computer Case
1 x ABIT AN9 32X AM2 NVIDIA nForce 590 SLI MCP ATX AMD Motherboard
1 x EVGA 320-P2-N815-AR GeForce 8800GTS 320MB 320-bit GDDR3 PCI Express x16 HDCP Ready SLI Supported Video Card
1 x SILVERSTONE ZEUS ST65ZF 650W ATX 12V 2.0 & EPS 12V SLI Certified CrossFire Ready Active PFC Power Supply
1 x AMD Athlon 64 X2 6000+ Windsor 3.0GHz Socket AM2 125W Dual-Core Processor ADX6000CZBOX
1 x G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 667 (PC2 5300) Dual Channel Kit Desktop Memory Model F2-5300CL4D-4GBPQ
1 x NEC Beige 1.44MB 3.5" Internal Floppy Drive - OEM
Running Windows 7 64bit Professional

comp 2:
1 x ASUS M2N68-AM SE2 AM2+/AM2 NV Geforce 7025 / nForce 630a chipset AMD Motherboard
1 x SAPPHIRE 100296HDMI Radeon HD 4670 1GB 128-bit DDR3 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card
1 x AMD Athlon 64 X2 5400+ Brisbane 2.8GHz Socket AM2 65W Dual-Core Processor ADO5400IAA5DO - OEM
1 x Kingston HyperX 2GB 240-Pin DDR2 SDRAM DDR2 1066 Desktop Memory
Running Windows 7 64bit Professional

the geforce in comp 1 burnt out on me about 2 months ago. its not completely dead...it just cant do anything major graphics wise and it shows a lot of artifacts on the screen....i took out the vid card in comp 2 and tried it in comp 1 and it worked great....so i proclaimed the geforce dead and ordered an MSI Radeon 5670 to replace it....when i received the new card in the mail, i popped it in comp1 and turned it on....the fan on the card turned on...but the computer did not boot...no beep...nothing on the monitor...only sound it made was a fast whirring at boot up (the fan i guess) which died down to a soft whir that seemed to be making a sort of soft cycle.....so i returned the card to tigerdirect as a dud...and waited awhile for msi to replace it...after 2 weeks of waiting...i found a better deal for an xfx radeon 5750 and ordered it...when i received it in the mail i had the same results...so i tried it in comp 2 with no more luck....the only difference is that in comp 2, the computer DID boot up...it wasn't until later that i realized this was due to the fact that the MB in comp 2 has on board video...and after it couldn't detect the card...it switched over to on board video.....now the MB in comp 1 doesn't have on board video...so it had nothing to switch to...so now i have verified that the card doesn't work in either of my computers...so i rma'ed it...xfx has a life TIME warranty so i had to send it to them...they checked the card and said that it was good but they would send me a replacement anyways....i have received that replacement and am STILL having the same exact results....xfx suggested that i update the bios...because some mbs don't recognize pcie 2.1 until the bios is updated to....so i tried that...and i noticed that in all the update descriptions for comp 1's MB bios, nothing was said about pcie updates....but i d/l'ed the flash utility anyways...but the utility would always freeze before i could flash the bios...so now I'm at a loss for what the problem is...and xfx doesn't seem to want to take the card back because apparently they think that something is wrong with both my computers...they just don't know what.....

any help figuring this headache out would be greatly appreciated   thank youDid you switch in BIOS to pcie x16 graphics first if available? There is a little setting for it. Otherwise it will use the onboard video. I just checked that and it is already SET to PCIEXP1 ...it didnt give me an option of what pcie to pick from...
but seeing as i put my radeon 4670 from comp 2 into this mb on comp 1...i would think it can read pcie x16 cards...and 2.0 at thatIt has to be switched to x16. Right now its in x1. Try flashing BIOS to latest revision, or messing around with that setting. Otherwise, it's screwed.