I'm using windows 8 pro which I upgraded from windows 7 home premium in january. After the upgrade, my e key stopped working. After another few months, more keys stopped working and now, no keys are working. What do I do?
Given the fact that your keyboard functions deteriorated over time, I would think the keyboard went bad. If an external USB keyboard works fine, as suggested above, then you'll know for sure. Usually, you can get a replacement cheap off of eBay, and replace it yourself in a few minutes.