internet explorer has stopped working windows 7

recently my laptop got this problem




My laptop is using window 7 Operation system.
I disable some keys in my regedit to solved this prob.

method:
1. Click on start and Type regedit on search bar (on RUN command)
2. Navigate to following key
HKLM\Software\Microsoft\SQMClient\Windows\DisabledSessions
3. delete all string key except default inside “DisabledSessions”
4. restart PC