zing_deleted

Try this from recovery

cd \
cd Cd system~1\_resto~1
dir (should get a list of recovery points)
cd rp* ( choose a restore point a few in so if there is 9 choose 7)
cd snapshot
you should now see c:\system~1\_resto~1\rp*\snapshot (*) figure you chose
copy _registry_machine_system c:\windows\system32\config\system
copy _registry_machine_software c:\windows\system32\config\software

follow above commands in order but not the should see line

this should have copied your registry from a working restore point. It may not work and its at your risk but it may work

Failing that if you have the correct media just try a repair install