OH CRAP! Did I just make a BIG mistake?

Well my sister ruined my pc to the point of no return, I can't get into what she did, but lets just say it was really bad. I burnt all my mp3s and important stuff to DVDs and CDs as data disks....I restored the entire pc and after I put them back on I noticed the quality was greatly reduced...

....am i going insane or did burning all my music as a data disk and then returning things back to my music folder seriously degrade my quality? If so, good lord I am seriously upset....It's either that or my headphones suddenly started sucking? I've no way to compare as they are all I have right now :[

Yes, burning them and then returning can in some cases damage the quality, it really depends on the quality of the DVD/CD's and the quality of the Burning software.

No, if you burned them as a data disk and put them back there won't be any change in quality. I'm guessing it something else, like a soundcard setting or something like that.

I've never heard of problems of loss of quality if the files were burned onto a data disk. I'm thinking it's a soundcard/driver issue as well.

yea check to see if your sound card has any updates.

start\control panel\device manager\sound,gaming,controllers.

then choose your sound card and click on check for updates if your are using VISTA