When you uninstalled did you also delete the programs folder from Program Files to make sure whatever is causing the problem isn't be left behind?
Did you install anything on the computer that could have caused it to quit working?
Does it work in safe mode?
"The test of any good fiction is that you should care something for the characters; the good to succeed, the bad to fail. The trouble with most fiction is that you want them all to land in hell together, as quickly as possible."
— Mark Twain