After running the WinHelpOnline fix for the .lnk file extension problem all was fixed and ran fine for about four hours. Now it has occurred again and I wonder what is causing the file extensions to change in the first place?
Did you manage to fix the issue. Please let us know if you need any further assistance on this.
Are you running some cleaning software on your system?
Maybe a registry cleaner in the background or so?
Follow the following procedure...it can explain it better than I can:
Hope that helps.
Well possible a malware infection, reboot to safe mode and rescan with clamwin and malwarebytes antimalware.
try File Association Fixer
Also fix taskmanager, regedit
Quick Disaster Recovery
RRT v126.96.36.199 (Remove Restrictions Tool)- Sergiwa Antiviral Toolkit
Click Start=>All Programs=>Accessories=>right-click command prompt=>select Run as Administrator=> type sfc /scannow, tap enter. This will examine and attempt to repair system files. It will take a while