The fan doesn't work at all. I tried reinstalling the BIOS, but it gave me an error, then it started beeping and showing a QR code. When I clicked on this QR code, it told me that the problem was in the fan, check to see if it was dirty, and so on and so forth. I looked, everything seemed clean, unfortunately, I couldn't take apart because I don't have a screwdriver. Can you advise me what to do? thank you