Jim is running Internet Explorer 10, and keeps getting error messages saying that "Internet Explorer has stopped working". There are a lot of things that can cause a browser to crash. He should first update Internet Explorer to version 11, which is the latest. He'll have to go to Windows.com and install it from there, because it won't be in his System Updates yet. If that doesn't fix it, he should reset the browser.
Since he's having the same problem with Windows Live Movie Maker, Leo thinks there may be a damaged DLL (Dynamic Linked Library) that both IE and Movie Maker are calling on. There are a couple of things he can do. He should first make sure all of Windows is intact. He should click Start > Run, then enter "fsc /scannow". This will run through all of the Windows files that are supposed to be installed by Windows to make sure they're intact. If he does find a problem, he will need his Windows Install Disc. If he has that disc, he could always run that Windows Install Disc, and just before it installs he should choose "Repair". That will fix any damaged DLLs.