[–] alloygeek 0 points 2 points 2 points (+2|-0) ago
I've had to do it for client's machines- so far my record is 15-2. It is ugly if it goes bad. I had two go well, but they didn't have any programs installed to speak of (just Firefox/office).
I'd do a full backup, try the uninstall and be prepared to revert via your backup, do a clean install and copy the files manually back.
Good luck.
[–] sparkybear 0 points 2 points 2 points (+2|-0) ago
Yes. New installations go away. You may need to reinstall or delete some registry keys point applications to the wrong location. you may also need to fix your permissions on your main hard drive. Takes a bit of time but nothing too complicated. Just google whatever stops working. If you can't use a shortcut, look for the .exe itself and then look for the fix.
[–] TopShelfPrivilege 0 points 5 points 5 points (+5|-0) ago
I've downgraded 27 machines at this point, mostly for older people who didn't like the interface. Out of the 27 I have had 1 go horribly wrong, ended up doing a fresh install of the original OS. All the others were just fine, no data lost, no problems, took about 20-30 minutes each.
[–] HomerSimpson 0 points 4 points 4 points (+4|-0) ago
I did. You basically lose all software you installed to your computer. Mostly only noticed this with games. Regular files seem to just stay.
[–] phly95 3 points -2 points 1 point (+1|-3) ago (edited ago)
I went to Windows 7 using my downgrade rights, but Bluetooth had this terrible glitch that it would make this buzzing noise like when you plug headphones into a public computer. My battery life was also worse. I decided to go back to Windows 10 after that. The Bluetooth support on Windows 7 is really subpar, but Windows 8 would work fine for those issues.