Went to bed with Windows 10, Woke up with Windows 7

About a week ago I installed the free windows 10 upgrade on one of my home PC's, everything went good and installed perfectly. I woke up this morning and the computer had reverted back to Windows 7 by it's self sometime during the night. It reverted back to a very old version I had installed, now it has the windows 7600 build not genuine version in the lower right hand corner. All of my documents and programs are gone.... I checked to see if I could restore to an earlier version and the only one listed was from 5:17 am where it had updated this morning.

Is there any way to change this back to 10 without a complete new install?

Anyone else had this problem?

Thanks,

Chris

Do you have more than 1 operating system installed on different partitions/hard drives?

I do have multiple drives in the computer, it's possible that one of them had a prior windows install. I had not even thought of that possibility; I will unhook those drives and see what happens.

Thanks for your input.

Sounds like something caused the boot order for the hard drives to change in bios, then.

If you install and make a Macrium Reflect Free rescue disc/USB and boot the computer from that, there is an option under the Restore menu to fix startup problems. The first step of that utility will sniff out all installed operating systems (well, Windows at least, not sure about Linux). I'm sure there are probably other programs, even built in command-line programs in Windows, that will do the same thing, but Macrium Reflect Free is the way that I know and I have my rescue USB already made, so that is what I know how to use.

Thanks for the advice, I will try that tonight when I get home.

NavyLCDR said:

Sounds like something caused the boot order for the hard drives to change in bios, then.

This was the issue, I went into the bios and changed the boot order back to the correct drive. Thanks for your help.

Redfire said:

This was the issue, I went into the bios and changed the boot order back to the correct drive. Thanks for your help.

No problem, glad to be of help and it was a simple fix!