Radeon 5850, Huge graphic problem!!!

Hello. I have 2 months old laptop Acer ACER AS7745G-434G64M I5-430/ 4GB/ 640GB /HD5850 1GB/ W7P | bigbang.si (sory for the language on webpage). When I start the race in nfs Shift, this happens:
2shared - download shift 2010-12-02 16-39-58-48.bmp
2shared - download shift 2010-12-02 16-40-03-71.bmp
2shared - download shift 2010-12-02 16-40-42-98.bmp

When I start Race Driver GRID, at the moment I get into menus, I can see only this (I can hear the menu sound): 2shared - download GRID 2010-12-02 16-41-57-08.bmp

Some other games work just fine, games like Mafia II, new NFS Hot Pursuit, Mass Effect 2, COD Black Ops, Prototype...

Any thoughts what could be wrong?

ps: I already updated my graphic drivers and directx.

 

what graphic setting are you playing on? you might me playing on to high of settings? try lowering the graphics.

 

run furmark for 10 min to see if that occurs. Are you overclocking at all?

 

Lowering the graphics doesn't change anything. Bearclaw what do you mean if I am overclocking? And I ran the Furmark. It runs just fine, no problems at all. Average FPS is 31 at default settings, that were at installation.

 

Are you increasing the clocks on the GPU?

 

Oh, wasn't sure before if you were refering to that. Yes I have tried overclocking a bit. But the temperatures were very safe. When I overclocked, max temp was 75°. Do you think the consequences are showing now? Will I have to send the laptop to repair it? Will they notice I have been overclocking?

 

Do you still have the same problem with this game when you go back to default clock settings?

I've noticed that there are a few games that I can't overclock as high as other games and sometimes I have to adjust the settings until I find the stable clock setting for that particular game. (I have the 5830, which is based on the same die as the 5850.) For example, I can usually overclock to 550/1150, but for some games I've noticed that I have to reduce it to 450/1050. When overclocked too high, I've never noticed the strange display result you posted, however, only crash-to-desktop or black screen crash.

 

Of course I stopped overclocking. Interesting how far you can overclock the memory speed. My defaults are 625/800 and max stable overclock was 700/900.
ps: something new happend... Every time I change GPU clocks (down or up), screen very quickly flashes, blinks. That never happend before... Could this be a "symptom"?

 

How did you determine that it was stable?

I prefer OCCT over Furmark for error testing. I agree that you should test at least 10 minutes with error checking on and see if it passes. I usually test with a one hour run to make sure everything's stable.

 

Furmak is "blacklisted" in the ATI drivers. The card never goes into 3d mode when it's running. I had forgotten about that when using it on mine. Furmark isn't a good stability test for ATI hardware unless you manually set the card to the clocks you want.

@OP: Your GPU probably bought the farm. I'd suggest contacting Acer or the store you bought it from for repairs.

 

Furmark is known to kill graphics cards. It has no failsafe at temps, it just pushes its test whether your card can handle it or not.

 

Which is why you should always monitor your notebook when you are stress-testing. If you see any temps getting too high, you can stop the test.

 

My GPU bought the farm? What kind of expression is that ? I understand, guess I will probably have to take it back and claim the warranty... Do you think they will repair it? Will they notice the overclocking?

 

Uninstall the overclocking applications beforehand. Don't mention it... if they ask say you have not.

 

Ok, simple enough