There is so much else that I'd need to know that I will not be asking for all the gory details. Instead I'm going to note that if you are running a firewall, it can eat resources this old OS can't spare. But you didn't reveal such. That's just one of a dozen issues.

Start with Optimizing Windows at

No parasites allowed with scans by ADAWARE, SPYBOT SE and HOUSECALL. I will not supply links to the items since you can find them with

And finally, the video driver must be current or printer output can fail. Microsoft does not update said drivers. You do that.