New answers tagged reinstall
I just solved this problem myself. Right click on 'Start' command prompt (admin) SFC /scannow this will fix any missing / corrupted component in your windows 10. It will take ~10 min to complete. hope this help.
It is possible to get the key from a Linux live disk (e.g. a Ubuntu Live DVD ), or any linux system that has access to the computer's drive (booted from usb, dual booted etc) - this may also be possible from another windows system without third party apps (example). Then you can get the licence by: Get a registry reading/editing tool. I used chntpw, it is ...
Do not delete EFI System partition (it contains boot files)! Do not delete Recovery partitions unless you know what they contain (to which Windows version they belong). Your Recovery partitions are not that big (450 MB + 800 MB). You can find out to which Windows installation they belong over the link/element "RecoverySequence" of corresponding Windows 7/10 ...
As others have pointed out, the Win8-key cannot be used to install Win8.1. You would have to install Win8 first and then upgrade to Win8.1. Or you can use the generic key, as pointed out by @Ramhound and afterwards enter your Win8 key to activate win8.1. But here's another suggestion: Win10 accepts Win7/8/8.1 keys directly. So I would suggest to directly ...
As Manoj said, A Windows 8 key can not be used for activating Windows 8.1 Based on your situation,you could install Windows 8 first, then perform a upgrade. Since Windows 10 is available now,you can upgrade to Windows 10 and activate it using Windows 8 product key. http://windows.microsoft.com/en-us/windows-10/activation-in-windows-10
Since you have Windows 8 key, as Manoj mentioned, I think the best way is to upgrade to Windows 8.1. You could follow steps in this link: http://windows.microsoft.com/en-in/windows-8/update-from-windows-8-tutorial In addition, you could also ask Asus manufacturer for further help.
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