I'm having issues with compatibility mode in windows 7. When I try to run any program in "XP Compatibility Mode", the mouse displays the "thinking" icon for a few seconds, but then it returns to the regular mouse while staying at the desktop - the program does not open. However, if I go into the task manager, it shows the program running in "processes", but not in applications.
This effectively means I can't run any programs in compatibility mode, as the programs do not open normally.
Some further details:
1) This issue applies to all the compatibility modes from Windows 95 through to XP Service Pack 3, but NOT to the three Windows Vista modes (IE, the programs open normally in Windows Vista compatibility mode).
2) Running as administrator does nothing to change this issue.
3) Using the "graphics" compatibility settings works as intended (Ie, checking 256 colors or 640X480 resolution does in fact open programs with these settings). It is only the "OS" compatibility settings that do not.
4) I have never applied a "Watermark patch", and I checked the security settings in my user32.dll file - they are at the settings recommended by another potential fix to a different compatibility issue.
5) I have checked the system integrity of my files (SFC / SCANNOW) and everything is fine.
I'll be happy to perform any further details or take any steps - I just want to avoid trying a reinstall.