Upon starting up my HP Pavilion a850e, everything powers on correctly, but instead of any Windows or HP welcome screens appearing, I have a screen cluttered with little green bars. The keyboard is plugged in and works otherwise, but nothing responds.
I called HP, and they told me to do the "press F8, F1, etc. repeatedly" trick, which didnt work. After moving some little green card around inside the actual computer, nothing changed once again.
Everything was perfectly fine up until about 9 AM today, so I have no clue what could cause this. Any ideas?