First I would suggest re-installing in safe mode like this :
turn off machine,wait 15 secs, turn on, immediately start tapping the ' F8 ' key, on this menu select safe mode with networking --- then select your Operating System,, press enter,,, and then select administrator account --- click yes when asked ---
If you need further assistance please let me know ---
or please click the Accept button, much appreciated ---
Thanks and Merry Christmas !!