KMODE_EXCEPTION_NOT_HANDLED is one of the many varieties of the dreaded Blue Screen of Death. It's probably due to a faulty driver. This tutorial will show you how to start your Windows 8 PC in safe mode to uninstall or update the driver causing the problem. http://www.tomshardware.com/faq/id-1655596/fix-kmode-exception-handled-error-windows.html Reviews • Best Picks • Raspberry Pi SUBSCRIBE to the Tom's Hardware YouTube channel → http://www.shorturl.at/fzCV5 Twitter→ http://twitter.com/tomshardware Facebook→ http://www.facebook.com/tomshardware Pinterest→ http://www.pinterest.com/tomshardware/ Community Forums→ https://forums.tomshardware.com/ Tom's Hardware is the leading destination for tech enthusiasts of all skill levels. Whether you're building a PC, buying a laptop or learning how to create robots with your kids, #TomsHardware has comprehensive editorial resources and a vibrant expert community to help you on your journey.