Your pc is way too infected for recovery by AV's. When was last time you formated it? Try Malwarebytes it will detect.
Install it in safe mode then try scanning.
These are the results from the scan done by Malwarebytes' Anti-Malware 1.51.0.1200
Malwarebytes : Free anti-malware, anti-virus and spyware removal download
Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\AntiVirusDisableNotify (PUM.Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\UpdatesDisableNotify (PUM.Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
Not sure why these scans are pointing at some antivirus updates as threats!
What about the safe mode thing? will that help? Also I think it may have been couple of years since I formatted the HDD.
Since I don't have any external HDD etc to take backup of existing data I avoid formatting the HDD.
Now I have a new pen drive which I want to use and also some blank DVD's to take backup of data but getting worried of the infection to do it.
06/07/09 when OS was last installed on my PC