boot up and when you get to the safe mode options page... select Last known Good Configuration
The basic idea behind the Last known Good Configuration is that when Windows boots successfully, it makes note of the current configuration, marking it as good. If a catastrophic configuration change were to occur and Windows is unable to boot, then the system still has a record of a configuration that is known to be good. A boot menu option will allow you to boot Windows using this configuration and restore the known good configuration.
the Last Known Good Configuration option reverses the most recent system and driver changes within the hardware profile. The system and driver configurations are returned to the state they were in at the time of the most recent successful boot. When you boot using the Last Known Good Configuration, Windows also restores the registry settings found beneath the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet key.
Microsoft recommends using the Last Known Good Configuration option as the first technique for repairing a system that won't boot....
if that doesn't work...then a repair is in order...go here
for the how to guide...
Edited by happyrock, 27 July 2009 - 05:48 PM.