restoring windows 7?

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I have a flesh drive to put my programs on like Google Chrome, photos, documents and anything else. So that's clear.
But here's the thing, IE want stay open which i don't use, but still it want stay open, other corrupted programs Some programs like IE will say (Internet Explore has stopped working) and also, i downloaded a word processor, and when i click Print Preview, a message pops up saying Abiword has stopped working and closes the program. So when programs are corrupted or say (Program has stopped working) and them closes the program. Should i use System Restore for that, to remove all that i had install.