It is sometimes not possible to remove all device drivers and Registry settings for a device in the Windows operating system. So called leftovers can cause a series of problems from slow boot times to performance and stability issues. Trying to cleanup the device drivers manually is a complicated long winded process as it does [...]
Remove Driver leftovers with Driver Sweeper
Drivers that have not been removed from the system after uninstalling the device and software can have a serious impact on system stability. You could for instance be in a world of trouble if you have been using a Ati card and Ati drivers and switched to a Nvidia card and drivers. Driver leftovers could affect system performance and be the reason for crashes and bluescreens.

