Guild Wars 2

Hello there. My game freezes all the time! More distincly the screen freezes and there is a strange noise coming from the speakers. Lately it happens very very often and it starts to get annoying it makes the game unplayable. I lowered the graphics to the lowest , muted sound, still the same. Iam starting to get desperate it seems like there is no sollution and iam doomed to always restart my computer in order to play some more minutes.Can you help me ? It will greatly improve my gaming experience!

I could not find how to upload a second file so iam doing it here