Hi,
The raspppoe.sys process is part of Microsoft Windows and should not be deleted or prevented from loading each time Windows loads. Doing so could cause errors or Windows to stop working.
- Why do you say "raspppoe.sys file is bad "?
- Are you getting any error messages? If yes, when and what is the exact error message?
- How did you try to "replace it"?
The SFC /scannow command scans all protected system files and replaces incorrect versions with correct Microsoft versions. For more information how
to do SFC/ scan, please follow the following link:
How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7
**http://support.microsoft.com/kb/929833**