ATI 4850 - Black Screen when playing games

Hi Guys,

My machine spec is:

Gigabyte P35 DS4 mobo
Intel E8400 CPU
4gb 1066 Corsair Dominator
320gb Samsung F1 Spinpoint
Windows Vista 64bit (all updates install).
ATI Radion 4850 card.

Any game I try to play (Live for Speed, Battlefield 2, Nascar 2003, STALKER (Clear sky and Chernobyl) all give me the same problem, after playing for about 5 or 10 minutes I get a black screen with a message on the monitor saying "Auto Adjust in progress". If I just leave it sometimes the game games back on - only to do it again shortly after. Other times it will lock and just bluescreen.

Is there a solution to this issue out yet?

I'm using the latest (November) ATI 64bit driver.

The card is less than a month old!

Thanks

Brockers

Im using the Antec SonataIII case with the supplied 500w Earthwatts PSU

I recommend at least a 550W PSU. (as does the manufacturer) however that sounds like a monitor issue instead of a card issue. What monitor do you have?

I think the wattage from the PSU sounds adequate, but check the actual ampage rating on it against what the card needs - check the system requirements.

FYI: I have the following E6600, GA-965P-DS3P, HD4850, 1HD, XP, 2x1GB PC2-6400 + 500W zalman PSU and it's stable.

cheers Diddly for your help,

I may invest in a new PSU in any case as I'm tempted to raid up a few of these samsung drives.

I really don't think the PSU is the question and after reading lots of reports of a similar problem it looks like RMA is the only way to go...