Hello my name is ***** ***** i will be assisting you to fix the problem.
when was the computer working fine last time.
restart computer and tap f8
select safe mode from the menu and press enter
once on safe mode desktop, follow the below steps
From the Windows 8 Start screen, type "Restore." The top result in the right-side Search panel should be "Create a restore point." Even though that's not what we're doing today, that's the choice you want to make. It opens the Control Panel to the Systems Properties dialog's System Protection tab Tap the first button on that property sheet: System Restore. This opens a wizard-like dialog, the first page of which says "Restore system files and settings" Next, you'll see a dialog with a choice of system restore points Hit Next. Now you'll see the "Confirm your restore point" dialog," which lets you do exactly what it says. Note you can tick the "Show more restore points" box to do just that. You're also prompted to save any open files and make sure your Windows Password ***** Click Finish. You'll then see a final warning dialog telling you that once started, the System Restore cannot be interrupted, with another confirmation button for continuing the process. Click Yes. Next you'll see a progress timer saying Restoring System, after which a full-screen Windows Update-like screen will display, saying "Please wait while your Windows files and settings are being restored." The process will run through initializing, restoring the registry, and then it will restart.
let me know the status whether it restarts normally or goes back to blank screen