My laptop had always had pesky little problems, but at least it was functioning. Now in an attempt to fix these pesky little problems, I did a scan and check for disk C. For whatever reason, it took up about 700 MB of space and I ended up having a really, really low disk space left. After I deleted a few files, I restarted the computer and it started freezing during startup (as stated in the title, the alert said something about the desktop though I can't remember what it was about exactly). So I pressed the power button off and on a few times in hopes that the problem would somehow go away (it didn't), but eventually I reached the point where the laptop could barely turn back on. I have since left the laptop on, in safe mode, and I'm not sure how much longer I could leave it on. I've been told to defragment, but I have only 3% of the required 15% free space. Should I try to defragment anyway? If not, what else could I do? My main concern is losing all the files that I have on the computer. I'm not the only one who uses this laptop, so I don't know which files are important and which files are junk - and what particularly important documents anyone has saved in the past 2 days. My CD/DVD burner currently doesn't work, and I probably won't be able to get a USB for another 12 hours. I'm completely lost. Please help!