I have a WD WD740ADFD Raptor Hard Drive is a ATA drive and about 5 weeks ago while i was playing World of Warcraft the computer screen froze and i had to restart the computer but the bios would not see the HD when computer start up. So they send me a new one. After 2 weeks of been install it happen again. I made sure it was only the game on that computer. This last time the Hard Drive made a Screeshing noise before it die. They sending me a new HD but i am afraid to install it before i see whats causing the trouble.