PBU constantly shutting down
Update your Graphics drivers from Intel's website.
To find the correct graphics driver,
1) Locate the Intel Graphics Control Panel in your systems tray
2) Navigate to Options and Support
3) In the Options and Support section, find the drop down and locate Information Center to determine what type of video driver you have
4) In the Options and Support section, find the drop down and locate Support and select Download the latest Intel Graphics Driver
5) Find the latest version of the HD graphics driver for your computer
6) Proceed with installation