1. Click Start , click All Programs , click Accessories , click System Tools , and then click System Restore .
2. Click Continue or provide Administrator credentials if necessary.
3. Click Choose a different restore point , and then click next .
4. Select a Date and Time prior to first sign of the issue you’ve described.
5. If the date you need is in excess of (5) days click the Show restores points older than 5 days check box.
good luck