Detonator 3 weird problem

[Echelon]

When I install the detonator 3 drivers, switch my resolution to 800x600 and restart windows, I get, where normally it says that windows is restarting, @-characters and a few others all across my screen. When I switch to a lower or higher resolution, I don't have the problem. Also not with other drivers.
Any ideas??


Abit BE6-II
PIII 550 katmai
64 MB pc 100
Maxi Gamer Cougar TNT2 M64