just put screenshot.exe on your benchsetup, when done with benching put them in a thumb drive, we all have to do that. Smartphone or whatever photos from your score aren't accepted... so plz follow the simple basic rules...
Screenshot.exe
try updating your motherboards bios first ( set first all bios settings to default) Which mobo do you have? Can you post bios screenshot here of the voltages and memory timinjgs it sets
it could just be that your CPU needs a bit more SA voltage to stabilize.
Now 4800C20 is pretty neat, it could be the CPU doesn't like it with the XMP settings or that your motherboard just sets incorrect ones...