How old is it? My pentium 4 m laptop is stuck on windows 7, but it's also ~20 years old and there is some issue with the gpu that causes the display to have random noise.
Pentium 4 as well, my laptop is around 12 years old but I also have a 20 years old computer stuck on win xp.
Pentium 4s? I have several 2 desktops and 1 laptop(98 gaming laptop)...... recommend you looking around recycling plants for a old i3 or i5 or Core 2 then try to see if some of your old parts can be transfered over to it (Best to see if you can find a Sata hard disk as well if the old one dosnt work)...... or at the very least look for more ram for your PC