4870x2 not displaying, help needed

[Byson]

Took my rig apart for a blow out, reconnected everything as it was, the pc turns on, the motherboard gives no beeping signals, the gpu fan spins as it should but the monitor is receiving no signal. the gpu was working fine prior to me taking it apart most recently. i have taken it apart before without this problem but now i'm a bit lost for solution.

The card has 5 led's that signal any card faults, i couldnt find an exact led code breakdown but from what iv'e read it is only a problem if any of the leds stay lit after boot. in my case the leds flick during boot, but i think thats normal because i recall seeing them flicker when the card worked fine.

any help, would be appreciated.

 

[Alexander Lee]

I have never experienced this issue and so this is just a suggestion but have you tested with just one card to see if one of the cards is faulty?

 

[Byson]

it's a single card with two 4870 chips, similar to a 6990. so that's not possible.

 

[Alexander Lee]

oh OK sorry... can you test the card in a different PC?

 

[Byson]

havn't got another system available, however im expecting a new motherboard and ram in the next 3 or so days so i will try it out on that once it arrives.

 

[toosh]

I've got a Asus 8800gts and if i remove the card i have the same problem,all boots up but no signal to the monitor.The only way i cure mine is to take the card out,replace it with a different card (7900gt) let it boot up fully,turn the computer off replace the 8800gts and it boots perfect.Not a clue why though