Windows 8.1 All Version Home Pro etc Windows 8 Reinstall Repair System Recovery CD Restore OS Install DVD Guarantee Compatible with HP, Dell, Asus, Acer, Lenovo, Samsung, etc, any brand that runs Windows 8 Install Windows 8.1 with Update (newest version of Windows) Provide Startup Repair , Command Prompt options, possibility to fix startup problems If startup repair doesn't work then reinstall Windows with this DVD will fix the problem Only Computers that originally came with genuine Windows 8 can install