Restart Your Computer
If you're having problems with your computer, you might want to try restarting your computer before you call for help.
A large number of problems go away after a restart.
Another trick is to turn your computer off at the wall (also remove the battery if it's a laptop) and hold down the power button for 30 seconds. Then plug your computer back in and reinsert the battery, if applicable and restart the computer.
This can be particularly useful if your computer won't start at all, or your USB ports don't work.
