delete C:\WINDOWS\run.cxq if you havent already
If your pc is problem free now
Purge the old System Restore points
Turn off System Restore.
On the Desktop, right-click My Computer.
Click Properties.
Click the System Restore tab.
Check Turn off System Restore.
Click Apply, and then click OK.
Then Reboot. < Dont skip that step.
Turn ON System Restore.
On the Desktop, right-click My Computer.
Click Properties.
Click the System Restore tab.
UN-Check Turn off System Restore.
Click Apply, and then click OK.