In upgrade&security->reccovery, I don't have option to revert back to windows 8.1, but I do have windows.old directory and its contents.

My question is is there anything I can do at this point except formatting the HDD and reinstalling 8.1 again from scratch?

  • No; there is not – Ramhound Aug 8 '15 at 12:10
  • You only get that option in an adminstrator account. Are you logged on as a standard user? – David Marshall Aug 8 '15 at 16:48
  • @DavidMarshall I'm logged in as an administrator. – AndrejaKo Aug 8 '15 at 17:03
  • @Ramhound Why don't you post that as an answer?? – AndrejaKo Aug 8 '15 at 17:03
  • Why is this question graded -2 (now -1 after I upvoted it)? It is perfectly legitimate. – David Balažic Nov 22 '16 at 21:59

Actually, it depends on what folders are in Windows.old. You can boot from a install DVD/USB and repair and command prompt. From there you need to (for safety/fall back reasons)

ren "c:\Program Files" "c:\Program Files.10"
ren "c:\Program Files (x86)" "c:\Program Files (x86).10"
ren "c:\Windows" "c:\Windows.10"
ren "c:\users" "c:\users.10"  (if users if present under windows.old)
ren "c:\ProgramData"  "c:\ProgramData.10"  (if present)
cd \windows.old
move *.* ..

This may or may not work for you, but I did it. If it fails you can just move the folders back to windows.old and re-rename the folders.

  • Interesting way of looking at things! I'll definitely give it a try. I do have Program Files both 64bit and 32 bit, Recovery, Users, Windows and Program Data directories saved in Windows.old – AndrejaKo Aug 8 '15 at 17:04
  • @AndrejaKo Ren ProgramData ProgramData.10 Also – cybernard Aug 8 '15 at 17:07

After upgrading from Windows 7 to 10, my PC immediately had problems (bluescreen after a minute after login, each time).

The "Go back" option in the Settings would not work (or even be present sometimes, I tried safe mode).

I discovered, that the Go back to the previous build in the boot menu does the same thing (except that it actually works). It is described in some articles, like this one: How to Go Back to the Previous Windows from Windows 10

In the boot menu select Troubleshoot / Advanced options / Go back to the previous build.

(see here about how to get to the boot menu if you're not seeing it)

  • That's quite interesting. I didn't have the go back option in the boot menu. – AndrejaKo Nov 22 '16 at 22:18

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