Hello and welcome to TSF.
Windows 7 has a very robust System Restore. Have you tried invoking System Restore? You can access System Restore from the Advanced Options
menu by pressing F8
during startup, selecting Repair Your Computer
from that menu, select the keyboard layout, then choose System Restore
from the System Recovery Options
screen which appears. Choose a restore point before the issue arose.
System Restore - Windows 7 Forums
If you're able to perform a System Restore, post new logs from DDS as this one shall be closed to place you in the queue.