Latitude Pentium

Can I still upgrade a Dell Latitude with Pentium 166 processor?
My dad gave me his old laptop. It’s a Dell Latitude with a Pentium 166 processor. It has been reliable until last year. The fan doesn’t work and I think that caused it to overheat. It was able to support Windows 98 only. The power supply still works.
I plan to have it fixed, and while I’m at it, I was thinking if I would be able to upgrade the processor and the likes. I would like to give it my sister who’s in college when I get it fixed.
You wont be able to upgrade the laptop. That is a very very old processor, and you’re lucky to get it to work on windows 98.
There is also no point in getting it fixed because the laptop is so old, that it would be cheaper to get another laptop than to repair it. For example, you could get an old refurbished dell laptop for $300.00 that is 8 times faster.
Dell Latitude CPi Pentium II MMX Notebook