Well I took the time to look your picture at Imagehost ;)
Well, that's an error usually produced by a graphic device driver
such as NVidia. The memory got an access violation. You have to
update the device driver.
This you can do for NVidia here: NVidia Drivers
However don't forget to uninstall the older driver first in device manager in system properties (control panel).
If this doesn't help: disable the error report service.
Type in run box: services.msc
Find "Error Service". Shutdown and deactivate it.
If this doesn't help then perform a Memory Check: Free Mem Check
If your memory is faulted, then you have to contact your computer