Laptop beeps during operation, what to do?

My laptop starts normally without any problems, but from a certain time (randomly) the monitor flashes and I can only restart using the power button

And every time I start a certain game it makes 4 beeps

And a little earlier he made beeps again for the first time

Is my graphic over what is with bios battery?

No notification fields just the beeps

____________

Acer

Win 10

AMD a8 7100 quad core

AMD r5 graphics

AMD r7

hdd

8gbram

1tb

Both r5 & r7 are graphic cards

R5 is the primary

Probably a heat problem, but it is not possible to say exactly what.
I would remove the bottom cover once and check the fan including the head pipe and possibly blow it out with feeling.
Everything else would have to be seen on site.