I suggest:
1. You run a boot scan with
Avast Professional Edition or
Avast Home Edition (Home or Professional if your using you home computer and not business. Its Small Business if you have it on your business PC)
2. Download
Trend Micro HijackThis and select "Do a system scan and a savelog file." then when the results show, highlight all of it, right click, select copy and go to this topic and paste the findings.
3. Download
Malwarebytes' Antimalware and do a full scan. Report the findings in the log file before you remove them as they can be critical system files that need to be re-patched.
4. Download
Super AntiSpyware and do a full scan. If it finds anything tell us what it is or copy and paste the log file.
5. Try downloading a replacement registry editor. I posted one but you might want a different one.
Here is the download link.
6. Send the files it finds to
VirusTotal and paste the address in your next post.
You may choose to do any suggestion I said.