Memory remapping = Graphics card drivers stop working?

[DutchSchaeffer]

Hi folks, wasn't sure which section to post this in. I recently purchased an extra 4GB of ram, bringing my system total to 6GB.

I am running Vista x64, and have the Asus P5W DH Deluxe mobo and an Ati 3870.

The problem I am having is that in order to use all the ram, I need to enable memory remapping in the bios (which is fully up to date) but when I do this, when vista loads I get a message along the lines of "You do not have an Ati driver installed or it is not functioning properly".

I also get an error 43 message in device manager next to my graphics card.

When I disable memory remapping the card works fine, but I can only use 3.25GB.

Anyone experienced this before?

Any help would be most appreciated.

 

[DutchSchaeffer]

Thanks for the reply, I have tried removing the 3870 from device manager, uninstalling all the drivers, CCC etc and running driver sweeper, but it still comes back with the same problem.


I haven't yet tried reseating the card, will give that a go tomorrow.