my computer is a HP, and in tha start up menu it has some options like setup F12, Boot Menu ESC, and it also has Diagnostics F9

my point is,
do all computers have this diagnostics software or do “some” computers have it?

does yours have it?

I have the “blue screen” on my hp desktop running windows xp. I have seen online, software to download that will clean the registry. How can I download if the computer is frozen on the blue screen?

I have an HP Pavilion 513n with windows xp and it's SOOOOOO SLOW! I want to speed it up and everything on it is useless junk, because we have a new computer, but I don't want to install the sims 2 on mt new computer. will completely deleting everything on the old computer speed it up much? If so, any tips on how to delete everything?