I downloaded DriverChecker and it reported 16 drivers were not working.
Let's think that one through... are there 16 things not working on your computer?
Individual keyboard keys not working is usually in the keyboard itself. Check by trying the keyboard on another computer, or another keyboard on yours. If the F and J keys don't work when using the keyboard on a second computer, or a borrowed keyboard works normally on your computer, replace the keyboard.
LCD monitors having difficulty powering up is commonly a problem with bad capacitors in the monitor's power supply. Unplug the signal cable from the computer to the monitor, and if the monitor has the same difficulty switching on when it is not connected to the computer, the fault is within the monitor. If this proves to be the situation, it may not be technically difficult to fix, but the cost of getting it repaired professionally might not be attractive compared with the cost of a replacement monitor.