In your original post you said: "I've thoroughly scanned for malware and viruses, and removed everything,"
Jacee asked: "What did you use to scan with and what was removed?"
You posted a reply on what you used, but not what was found and removed. If you have a log of the scan, can you post what was removed? It would be a big help to know what the scanner found and cleaned.
Have you tried another scanner? - Malwarebytes.org
and Microsoft Security Essentials
are both free.
Sometimes malware targets the AV on a system so as to deny definition updates. You could also try one of the other AV vendor sites - some have online scanners that might elude a bug. Symantec Security Check
- Use IE, select virus detection (it's big - downloads their virus defs and ActiveX engine)
Why run another scanner? To detect malware that might have masked itself to emsisoft and AVG. I'm not suggesting running all of the above, start with MalwareBytes, then MSE (pausing AVG / emsisoft if you decide to run another scanner - though most do not interfere with MalwareBytes)
Now the tricky part. What if all report a clean system, you're still where you are when you started.
I don't know of a utility to fix this type of problem, although if you can identify what was removed, you might find a specific malware repair tool on Symantec
. I'm not advocating Symantec over any other vendor, you can check other vendors for their tool offerings.
If the malware changed a system file, you could run SFC /scannow in an administrator Command Prompt. I think that a system file attack would manifest itself as a loss of opening all
That's about all I can think of to try. Other members might have more and different suggestions. Please provide as much information about the problem as you can - that always helps.