Basic samples don't work

Hello there! So I was reinstalling Windows and of course I backed up all the samples/VSTs/etc. When I installed FL12 it was just normal. Everything worked. But then something went... wrong. All samples bundled with FL just broke. By "broke" I mean they don't have any sound in FL. I tried drag-dropping them to the pattern editor. When I clicked on one of them, there was absolutely no sound. [screenshot #1] All the custom ones were just fine. [screenshot #2] I don't know what to do. Reinstall is probably the only way but I'm just too lazy to do it. Maybe I'll try later and post results here.

SCREENSHOTS: #1 - http://i.imgur.com/rfvP85P.png #2 - http://i.imgur.com/MT8KcHZ.png