Doesn't go to Sleep

hi, i put tablet to sleep then when i press power button to star again, instead of continue the windows it start from beginning from the Boot or sometimes it gets shutdown. but if i press button within 5 minute it acts normally and continue the windows but more than 2_3 minute as i described before it start from beginning from boot or shutdown the system.

Please Help its really hard every time start from boot :frowning:

Have you tried to return from the suspension by pressing the enter key several times?

Yes, i also try volume buttons but unfortunately they didn’t work
Thanks for your kind reply