Help - crazy picture in bios

[Bureq]

Hello everyone. 

Before few days i noticed problems with display when i start pc - that part with motherboard manufacturer when before boot. Sometimes there are only minimal crazy things with logo and sometimes is rly crazy like on uploaded picture. I saw on internet that I should try use default settings for bios and i tryed to do that and when i entered bios i noticed buggy display, some colors are wrong and i can see green, purple and yellow lines on parts of screen that should be black and bottom part of bios should be yellow and now is crazy. Now i need help and i have some questions. Is this hardware or software problem? Pc is working fine, gpu is working fine (RDD2 working like before) and i tryed to use integrated gpu and i still have that crazy display in bios. I think that this is caused by combination of old bios and fresh drivers. I never updated bios so i didnt want to risk it because pc worked fine. One more thing, i made mistake when i was buying pc and i didn't checked ram support so i bought ram that was not on support list but they worked fine even with expo turned on but after few driver updates some problems started - red light on dram on motherboard when i turn on pc and pc would not boot but after restart everything would work fine and light would be off - support team from Gigabyte told me to update bios. And one more question  can problem with ram like this one cause problems when you update bios? I asked them before 2-3 days for help about this weird picture problems but i am still waiting for answer. Thanks for help and sorry for bad English - not my main language :).

 

Pc parts 

CPU : 7600x

GPU : Sapphire 7600

Motherboard : Gigabyte B650 Gaming X AX v2

RAM : G SKill F5-5200J4040A16GX2-RS5K     2x16gb