Hi everyone

I have a Nitro 515-54 and it used for one year, it's like a few weeks ago I start heard some noise from my laptop with a little bit of shock, I didn't realize that's come from my CPU fan, until yesterday I Opened the backside and I try to clean my fan, I touched one of them and that fan doesn't move, it's like a bearing without lubricating oil, you push it, it will stop very quickly after your hand left it, I opened the shell of the fan, there is no dirt in there, I put everything back and start my system, turn my fan to the highest speed, my GPU fan can running to 6000RPM, but my CPU fan only can arrive like 3500RPM with fluctuates up and down and sounds really big.
And another thing is when the system starts, the CPU fan only can run with about 200RPM, I put my ear on the keyboard I think the fan keeps turn on and turn off like a glitch, is this a huge problem? should I send it somewhere or just let it be?
(Thread was edited to add model name to the title)