1. Disconnect any additional devices connected to the laptop.
2. Hold the power button to forcibly turn off the laptop.
3. Wait a few seconds before starting the laptop again.
4. Start the laptop into Safe Mode by pressing F8 while restarting.
5. If it starts in Safe Mode perform the following:

1. Run a full system scan.
2. Reinstall drivers.
3. Check for updates.
4. Restore to a previous system state.
5. Check for virus or malware.

6. If it does not start in Safe Mode, contact a technician for professional assistance.