W8.1 won't boot "Your PC did not start correctly", Startup Repair error : "root cause found: registry is corrupt"
43363
Is it possible to enable System Protection from the command prompt?
42073
What to do when a Windows Update (KB4480970) breaks your computer?
146065
How do I fix booting process in Ubuntu 12.04 after the windows7 removed?
30233
How can I fix/install/reinstall grub?
96248
Cannot Restore Grub After Windows 8.1 Upgrade
41488
Will a clean install of Windows 8 recognize an OEM license/product key?
50346
Bootloader Problems Grub Won't Load Windows 7
63772
I can't boot into a usable system after updates. What should I do?
55876
Restore Windows bootloader
15124
Can't boot Ubuntu or Windows 8 after Ubuntu 64-bit install on Samsung series 7 Windows 8 laptop, error "All boot options are tried."
132316
How can I find out what went wrong with a failed Windows update?
37124
UEFI machine doesn't boot Ubuntu through NVRAM bootcatalog. How to fix?
143712
Repair Grub after install windows?
24640
Running Windows with defective RAM
124743
Need Help Fixing Grub after Installing Ubuntu 13.04 x64 Alongside Windows 8 on a Lenovo IdeaPad Y400 with UEFI
101071
Windows 7, Windows 8 entries missing after reinstalling grub
100323
Stuck on blue screen while booting the system