4850 - Graphics corruption upon restarting Vista

Sounds to me like you have a bad DVI port. Not uncommon, if you need both ports you will have to return the card for RMA/warranty service.

Well, I've started with the basics - I reseated the card, as I may have messed with the connection when I was trying to get the cooler to stop whining when the fan was at full load. It hasn't happened since I reseated it, so here's hoping that's all it was. I'd hate to have to RMA the card since Newegg lists it as OOS (4850 Toxic). Cross your fingers...

Hi

ive just got a radeon hd4850 toxic with the same problem. following a reboot, there are vertical bands of screen corruption, then when vista loads bsod. the only way to boot is in safe mode.

first thing i would do is get another card. under whatever warranty is available. then at least you can rule out a faulty card

the only time i have seen anything like this is when i once tried overclocking the memory on my old x1950. since the toxic comes with a preclocked core, i was guessing this could be the reason. i would try some underclocking (by shutting down, booting up into vista sucessfully and getting into the CC settings) and see how that goes. i know this is kinda going against what the card is all about, and many people report this working without a problem.

if you do have any joy, let me know as i would be interested in knowing how this gets sorted (providing you havent got a new card by now lol)