Do you have a different user account on your computer? If yes, try running LW from there. If no, set up a temporary test account & run LW. See if you have same problems.
It may be a software clash.
Do you have the utility Alcohol on your system? I believe this can cause problems.
Did you remove all java versions before re-installing the latest?
As far as compatibility mode goes, are there any others available you can try?
Not that it should make any difference, you could perhaps uninstall LW using the Start menu > Programs > LW > Uninstall, then use this version
Download ‘Other’ version & simply unzip & use!.