If at all possible, use a System Restore Point to restore your computer to the point BEFORE you made registry changes.
After that, then tell us the status.
RESTORE TO A PREVIOUS SYSTEM RESTORE POINT
WIN | type SYSTEM RESTORE |ENTER | NEXT |
check Show more restore points (lower left)|
Highlight the desired restore point |
Scan for affected programs (lower right) |
make a note of affected programs |
CLOSE | NEXT | FINISH
WIN is the key with the wavy Microsoft flag on top.