Here you can find information on your driver and current versions.
Please make sure your drivers are all up to date before reporting problems.
Sometimes there are problems with newly released driver updates.
If you suspect or know that your driver update is causing the problem, you should completely remove your drivers instead of "reverting back" to the previous version.
If you simply revert back this can still cause problems. You need to completely reinstall your drivers up until the previous version before the latest release.