Hi
Ok on startup keep tapping F8 till the advanced boot options screen appears , next using arrow keys move down to "safe mode with command prompt " hit enter ,, next when the command prompt screen appears type sfc /scannow hit enter
( there is a space between sfc and / ) Let windows see if there is any violations on your Windows Instalation , if so Windows will correct them for you .
Post me your findings
Checkurtech
