My files all say O bytes!!!

Is your antivirus software up to date and running?

 

um...i don't have one so anywho my friend said it's a virus so can someone tell me a virus that could do something like this?

There are plenty of them that can do this.  Is the system still operable, or is everything completely gone?

Well....

The files are "tehre" with their appropriate names but it says 0 bytes. But everything else is fine just my word documents, music, and images are gone. Does this help?

Here are links to a couple of free on-line virus scans:

You need to scan the system to find out what virus or worm hit it.  Try http://housecall.trendmicro.com/

However, if you're seeing zero-byte files, those files are gone - you will need to restore them from your backups;  there's no way to recover them if they've been overwritten with zero-byte files.

 

Wouldn't it be possible to use a low-level file recovery program to see if the entire file is still intact (look for an SOF block to start file reconstruction, and not for the deleted directory entry as a starting point, and that all subsequent blocks are still linked and accounted for). It would resolve to a file with a temporary name assigned by the recovery program that could then be examined (properties) to see what type file it was. This wouldn't work if files were gradually deleted over a period of time since those sectors would be returned for system use and are more than likely overwritten with other data, breaking the linkage between the blocks your trying to recover, however if the first SOF block is found, partial file recovery would still be possible. I know I could do this on another platform, but still learning about a windows pc.

Mike.