problems with Gainward HD4850GS

Hi,

i've posted some time ago. The problem was a freezing screen if I used Vista Ultimate x64 with 4GB RAM (Kingston ValueRam 4x1GB). With 2GB RAM on the board everything worked fine.
I thought that my graphics card was the problem (ATI Radeon X1950GT Super) and installed and used XP x64. On XP x64 I had no problems with 4GB and my X1950GT.

On Friday I bought new RAM (Crucial Ballistix 2x2GB) and a new graphics card and now I want to use my Vista x64 again.

But I have a similar issue again. If I try to use Vista x64 with 4GB RAM the screen shows white stripes and Vista restarts the graphics driver every 1-2 minutes. This happens for example when I open the system properties. With 2GB everything works fine again.

I updated my BIOS to version 2.70 and installed newest Catalyst 8.12, SP1 for Vista is installed too.

Do you have any ideas? I think it's the mainboard...it should support 8GB...

Thanks,

Thomas

VitoDonCorleone said:

Hi.

It's really strange. If I login as Administrator all seems to work fine. But if I login with my personal user it loads the desktop and then it looks like following picture:



I activated the Administrator account like you described and installed the 8.6 driver.
Don't understand why it's working under the Administrator account. I tried to create a new user account but there is the same thing as for my personal user.

Only Administrator seems to work fine...

Click to expand...

Hey Thomas,

On your very last post of the previous post you said that yor graphic card worked fine when you were logged on as administrator (Just a normal administrator not this TRUE admnistrator) Is this still the case?

If the answer is yes, I would make only an administrator account.

After reading your previous post I don't think its your mainboard. It sounds to me like software, possibly buggy drivers

I hope this helps

Pooch

Hi,

sorry for the delayed answer. I've tested it with a user (administrator account) but it's not working. With true administrator it seems to work.
After contacting the support I increased the RAM voltage to 2.0V and installed Vista completely new. I don't have all updates installed yet, but I'll post the result of the work. I hope it solves the problem. The support meant it could be a problem if Vista was installed with 4GB RAM and I should only use 4GB after installing SP1.

Thanks so far,

Thomas