|Please post the make/model of your laptop. Do keys 6, 7 work? Boot into safe mode, do the keys work then? If not, try this:|
- disconnect any external devices (USB drives, mouse, etc)
- disconnect the AC power & remove the battery
- hold the power button down for at least 10 seconds
- after doing the above, replace the battery, plug in the power, & boot up.
Did that solve the problem?