Hi,
Here are some troubleshooting steps that may help.
- Start by doing a hard reboot, remove the battery and unplug the AC adapter then press and hold the power button for 20 seconds then try booting it up again.
- If it will not work try loading in Safe Mode and see if you can run System Restore.
- While the laptop is booting up, repeatedly press on F8 until it loads Advanced Boot Options then select Safe Mode.
- Once in Safe Mode run the System Restore.
- Here's how to run System Restore:
http/windows.microsoft.com/en-PH/windows-8/restore-refresh-reset-pc
- But if Safe Mode will also not load the last resort would be reinstalling Windows itself.