Scratch MB (looks ok) lockup on win logo

Hi there.

System :

Asus rampage formula
4 gig corsair dominator

As i was installing some chipset/nb/sb Wc i accidently ripped my screwdriver across the board. like damn.

Inspected the circuts and it all looks pretty good, 90% sure they arnt cut.

Anyways when trying to start the MB all voltage leds went up and no boot, well as expected.

I left the board for some time and it would boot again without any issues, thats until i try to start windows, it locks up on the windows logo after about half a second (vista and XP) . same goes when trying to run the windows install cd (vista ) , no chance (windows XP setup disk does run as it has no real graphical elements)

So i'm puzzled as what the problem might be, i've run a memtest, ran fine (tested with different ram types etc ), tested the different sata ports and so on but with no change.

Anyone that have a clue about what the issue may be ?

Ofc the chances are there's no hope