What if the computer fan keeps ringing?

Just change the fan. Just don't change the lower heat sink. Just buy a separate fan on it. Consumables stores in the computer market all have this kind of CPU fan and graphics card fan. Together, the two will not surpass 3 yuan. In a CPU radiator, at least 35 yuan. Another method is to lubricate the bearing of the fan. Dude, it's up to you.