Hi Richard Martin,
- What is the make and model of the mouse?
- When you say “My mouse will scroll down to the bottom of the page automatically”, did you mean the mouse cursor?
It seems that you have performed almost all the steps including a soft reinstall. In this situation I think that there might be a virus infection, Trojans which might
be hidden deep in the computer.
We will perform a virus scan and check the status.
Run a virus scanner and check if this helps.
Virus Infection may also cause this issue. Scan your computer from Microsoft Safety Scanner, which helps to get rid of virus, spyware, and malicious software:
http://www.microsoft.com/security/scanner/en-us/default.aspx
Note: The Microsoft Safety Scanner expires after 10 days from the date of installation.
Note: Any data files that are infected may only be cleaned by deleting the file entirely,
which means there is a potential for data loss.
Reply with the status of the issue and we will be glad to offer our assistance.