Games stop to work

Apr 9, 2010 at 11:42 PM
Edited Apr 10, 2010 at 1:13 AM

i added games on my usb hdd by wbfs manager.  I played it many times. Then i added new games and old ones freeze after starting with black screen. To solve the problem i'v to add that games again. What's the problem?

Pls help me