Gaming Desktops

Hello, I've been using my PC for 2 years now and I noticed that the PC was very hot when I touched it so I've downloaded some softwares to know the temperature. I found out that my CPU's I'm peaking 100°C while playing and around 50°C in rest. My GC is peaking 80°C in game and is around 50°C in rest. I've been looking through all the internet and I came out with the hypothesis that it comes from my fans, the problem is that I see only one of the 4 fans I have (I have 2 "external" fans and 2 in my graphic card), the one who's visible is one of the two fans from my GC.

I've cleaned a little bit my computer, especially the fans and the air outlets and it didn't changed anything. I tried to curb my performances via windows's power management pannel, didn't work either (there is no point of doing this because I'm supposed to use my computer's power FULLY by the way).

I'd like to know how could I get into the bios's advanced options EVENTHOUGH HP don't recomment it at all, so I can change my fans speed because I can see that they are really slow. I've called the support but of course he asked me to do (st*pid) things like reseting the bios and then he told me that I should make it repaired but of course it costs almost 400€ (but business is business huh).

I'm posting this because I absolutely don't know what to do to fix all these issues, I'm desperated.

Best regards,

Mat.