[Tears]

*points to title*

I'd just be using it and it would suddenly freeze. I can't move the mouse or even Ctrl-Alt-Del, so I have to force shut down my computer to restart it. Sometimes it goes days without freezing, sometimes it will freeze again right after I restart it. It gets very annoying, and I don't think what I'm doing to get rid of the freeze is good for the computer. :/
It is a Windows OS Asus. My dad bought it online last year, so I guess it's fairly new. I use Firefox and Google Chrome. I save a lot of documents and drawings on it, and I rarely download large files such as games. I do notice, however, that because this is formerly a shared computer, my mother may have downloaded something that took up space on our System disk. Because it is nearly full. Also, I may have visited some site that messed up my computer, but I don't remember any particularly fishy sites.

Anyways, I wonder if anyone knows possible causes of this and if it can be fixed, how to fix it (other than buying a new laptop).