Question Athlon 200ge on a320m hdv r4.0 Bios ver. L8.01

Welcome to the forums, newcomer!

According to the motherboard's CPU support list;
all BIOS versions support the 200GE.

You're good to go!
 
As a suggestion...look to see if you can find a used R3 1200 or perhaps an R5 1400. Those Athlon are not at all impressive beyond surfing the web. I am fairly sure those also come with a joke of a noisy and poor performing cooler. Check to see if you can't find an inexpensive Ryzen 3 with it's stock cooler. Well better performance and totally worthwhile.

Let me see if I can find a post of mine....

Check this: