Your computer has been severely infected by malware, that is W7DA31.EXE. This is quite dangerous and unsafe for your PC and there may be other infections on your PC. You should urgently check your PC and remove any malicious application including W7DA31.EXE as soon as possible.

Location : Unknown
Type : Malware
Dangerous : YES
Removal : Immediately

 
How to get rid of W7DA31.EXE