Is it possible for a faulty X1900XT to kill motherboards?

Im on dead motherboard number 3 in 2 weeks. 3 different brands, asus p5wdh, gigabyte ds3 and now an msi 975x power up edition and all of them dead, the asus lasted a couple of hours, the gigabyte lasted a few hours and the msi didnt manage to post.

sooo, i was faffing around checking it all and i noticed 2 led's on the graphics card, the power led and the t_fault led both on brightly...the msi board powers up for a few seconds, then off, and in that time, the leds are both lit solidly on the card. im pretty sure that the card has seen its arse and died, but does anyone know if it could be the card that has killed the motherboards, or have i really been THE most unlucky barsteward ever?

the asus and the gigabyte boards were found to be faulty by micro direct and scan, so its not as if its just me missing something, ive tried 3 different types of ram, icluding ocz, corsair and
scan cheapo value stuff, ive tried a celery and a conroe, no usb, 1 sata hard drive, built up the systems outside the case to check for shorts, in fact i have completely emptied the case and cleaned it out, just to rule out anything like that.

so back to my initial question...can a faulty x1900xt kill motherboards, or have i just been seriously unlucky?

unlucky alf.

so you've not tried another GFX card? might it not be that thats wont let you post & the mobos were ok? (some places don't test them or just let you off when RMAing)

no, i had a picture on the screen on the asus, and the gigabyte, both of those were tested as faulty, its only this last msi motherboard that has no picture from the graphics card, but now those 2 leds are on on the graphics card.

ill get to the bottom of it eventually.

Smells of a duff PSU to me.

Not that its any conclusion either-way but I am about to RMA my Sapphire X1900XTX for the 2nd time.

First one slowly died, this one runs runs at 90c 'idle'......

Neither faulty ones did anything to my motherboards, although i guess there is a very slim chance it could, I would doubt it very much.