Hi, i have an acer asprice R15 R5-571TG-78G8. It kept freezing after recently updating and now it repeats diagnosing your pc. It does take me to the blus screen and i tried resetting and it fails to do that as well. WHEn i tried using windows iso with my usb and click on the usb option, it says "System doesn't have ang USB boot options. Please select other boot option in boot manager menu." But all option say same thing.