Hmm, come to think of it, everytime I boot it successfully, it asks me what settings to boot it on, safe mode, last known good configuration and boot normally. Could it be, maybe that it is caused by my anti-virus thing, AVG? It asks me to change something everytime I install/download...
as for the computer itself, its got windows home XP, a nvidia graphics card(forgot which one), 1gb ram, 200gb hd and evga nForce4 motherboard
Edit: Also, when I do boot up, it will either give a short beep, a long beep, or continuous short beeps.