gmm

Some good news. An automatic Windows update resolved the problem.

Thank you for the reply. I'm not certain whether it coincided with any video update, but it's a clue. Pressing ALT-F4 results in a menu opening with options to: Switch user, sign out, shutdown, and restart. There is no sleep option. I will perhaps try system restore.

Also, my sleep function has vanished too. Now I only have the options of shutdown and restart. I can put it to sleep with a quick push of the power button, but the option has vanished from the start panel.

The ability to change brightness on My MSI Notebook with Windows 10 has mysteriously vanished. I used to use the FN+ brightness keys up and down to make adjustments, but it stopped working, yet strangely, the FN+volume buttons still work. When I go to Settings>Display, it's not there either. I've tried everything I can think of? Any ideas of what happened or how I can fix this?