Sometimes the computer enters the saving mode and does not exit - what should I do?

Question

Computers

Sometimes (randomly) the computer does not come out of the power saving mode.
The power indicator is on.
The PSU is expensive, 700 W in one line, that is, the power reserve is huge (I bought it for a promotion and the difference with a simpler one was insignificant).
Core i5-4570K, overclocked 3.8…4.1 GHz (got confused and checked through Prime95 so that it wouldn't troll with my cooler)
MP Asus Z87-C
16 gigabytes of memory
Video Gigabyte GeGTX750Ti, monitor via HDMI
There are SSD, HDD, DVD- RW
Windows 10
Another (very rare) situation is that when you exit the energy-saving mode, the computer seems to work, but the monitor does not show.
There have never been any game glitches.

Answer 1

There is a similar situation with the sleep mode, when you leave the computer for 10-15 minutes, naturally it enters sleep mode, but there is no way to get out of it, but there is a solution, go to the device manager, select your keyboard or mouse and check the box allow wake up try it, it might work.