By video what do you mean: internet video? flash? html5? DVD discs? avi/mp4/mov files on your harddrive?
Please clarify the browser and media player you use?
Please check whether plain audio (mp3 or wav for example) files play sound properly, tell us what you find.
Please clarify the nature of the problem, after a restart does video work for a few minutes? Hours? until you next log off? Or have you not got it to work at all?
Also please clarify the sequence of events you went through, as far as I read it the following happened: you had windows 10 but did a system restore (do you mean a system image?) back to windows 8 (or was it 8.1?), then you upgraded to 10 again (did you choose this upgrade or was it forced upon you, I think the former should be more likely thesedays but ought to check?), you're using 10 now (how long since you did the restore and how long since the re-upgrading?) and videos aren't playing properly?
You might want to check the update lists and logs as to whether you have had the latest updates to 10 or not (just because you didn't choose to install them doesn't mean windows 10 didn't do them behind your back without your consent), just so you can be sure whether you actually have the latest updates to 10.
Please answer as many of those questions as you can, the info should help us better diagnose your problem and work out a solution.
Edited by rp88, 05 May 2018 - 04:00 PM.
Back on this site, for a while anyway, been so busy the last year.
My systems:2 laptops, intel i3 processors, windows 8.1 installed on the hard-drive and linux mint 17.3 MATE installed to USB