Hi,
In some" cases this KB article will help.
Windows hangs or freezes
http://support.microsoft.com/kb/2681286
Be sure to check with the System Maker's Support (Motherboard Maker for custom
systems), their on-line documentation and drivers, and ask in their forums (if any)
about any known issues. Be sure to update the BIOS, low level chipset drivers,and the other major on-board and separate device drivers. Those alone may
resolve some or all of these issues.
Note using Win Key + X and Win Key + W (to get to Control Panel, Run, and Settings
as needed). Win Key + D calls the desktop and the using Win Key toggles Desktop
and Start Screen.
Translate the Windows 7 methods and use them on Windows 8/8.1 Resolving Blue Screen errors in Windows 8/8.1 ****http://windows.microsoft.com/en-ca/windows-8/resolve-windows-blue-screen-errors ****Resolving stop (blue screen) errors in Windows 7 - has a section for if you can or can't
start Windows (applies to Windows 8/8.1). If you can't start Windows 8/8.1 try using
a Repair Disc (see methods to make one below) to access Safe Mode and other trouble-
shooting steps.
http://windows.microsoft.com/en-us/windows7/Resolving-stop-blue-screen-errors-in-Windows-7
We can analyze the minidumps if you make them available from the OneDrive or other file sharing sites (such as MediaFire). If you have problems uploading the minidumps copy them to the Desktop or the Documents folder and upload them from there.
Adding files to your OneDrive
http://windows.microsoft.com/en-us/windows-8/getting-started-onedrive-tutorial
Upload photos and files
http://windows.microsoft.com/en-us/onedrive/add-photos-filesOne-Drive - Share files and folders and change permissions
http://windows.microsoft.com/en-us/onedrive/share-file-folder
Zip or upload the contents of C:\Windows\minidump
Use OneDrive to upload collected files
Also do this so you can see the likely bluescreens.
Windows Vista automatically restarts if your PC encounters an error that causes it to crash. (also Windows 7 and Windows 8/8.1)
http://www.winvistatips.com/disable-automatic-restart-t84.html
====================================================
Windows 8/8.1 includes special methods to Refresh (keep files and settings) or a Reset
(new install removing all).
How to restore, refresh, or reset your PC (Windows 8/8.1)
http://windows.microsoft.com/en-US/windows-8/restore-refresh-reset-pc
How to Refresh Windows 8 & 8.1
http://www.eightforums.com/tutorials/2293-refresh-windows-8-a.html
How to Reset Windows 8 & 8.1
http://www.eightforums.com/tutorials/2302-reset-windows-8-a.html
If you need a Recovery USB Flash Drive or other methods :
How to Create a Recovery USB Flash Drive in Windows 8 & 8.1
http://www.eightforums.com/tutorials/5132-recovery-drive-create-usb-flash-drive-windows-8-a.html
How to Boot to the "System Recovery Options" in Windows 8 & 8.1
http://www.eightforums.com/tutorials/2269-system-recovery-options-boot-windows-8-a.html
How to Boot to the Advanced "Startup Settings" in Windows 8 & 8.1
http://www.eightforums.com/tutorials/4924-advanced-startup-settings-boot-windows-8-a.html
Hope this helps.
Rob Brown - Microsoft MVP <- profile - Windows and Devices for IT : Bicycle - Mark Twain said it right.