My computer keeps freezing!

Hello,
My Windows HP (or what ever its called, it's quite sad i don't know what my computer is) kept freezing so i restarted it. But when i restarted it got stuck on this screen that says.. "HP ivent" and below that <esc=boot menu <F1=setup> <F10=system recovery>
but i tried pressing those buttons on my keyboard, but it's frozen, so it doesn't work. Then when i restart it again it does the same thing. Please & Thankyou


-Darien