Video playback problems on laptop

Hi,

I bought a new laptop a week ago. Bought it so it would make my edit faster. Firstly it looked like it worked perfectly and smoothly, but after a minute I got a weird glitch in my playback. After that the clips all became black. Restarting Davinci resolve was the only thing working. But after 30 second it started again.
I searched online for solutions and then found the solution to update drivers. So I updated my AMD drivers and it stopped, until today.
Today I added a photo in my timeline and I got the glitch again. And after restarting a few times it continued happening. It looks like it's a AMD graphics problem. Now I don't know what to do anymore. Can anyone help me?

specs:
Lenovo IdeaPad 5
AMD ryzen 7 4800u
with AMD radeon vega 7
16GB RAM

Did you get the drivers from the AMD site and did you do a Clean Install?

I installed AMD Adrenalin 2020. Through there I upgraded drivers to 21.4.1. I don't know how I can install an older version.