ACER 7600U windows 10, video updated caused system fail

jajjb
jajjb Member Posts: 1 New User

Was finally able to upgrade ACER 7600U to windows 10.  Immediately afterward Windows 10 upgraded the video driver.  Unfortunately after reboot the system has failed to go back into windows.  If I run the diagnostics it no longer has any backup to  the system.  and it is stuck in previous build.  How do I uninstall the windows 10 and revert back to windows 8, so my computer will work again?