Hi all, would appreciate your feedback/help as regards to the following issue.

Recently my father purchased a couple of 750GB Seagate HDD. One he installed inside his PC and the other in an external drive connected to the PC. Both are not connected to the mobo by SATA, because his mobo has not enough SATA ports.

Anyway, the problem is...after he has installed these HDD, the PC runs fine, as per normal, BUT...when playing a movie, the movie will experience a lot of jerkiness and the movie is also slowed down, almost as if it's in slow-motion. Plus, the movie's sounds will be quite high-pitched and jerky, kinda like Alvin the Chipmunk's voice. Haha. He went back to Lowyat to get the HDD replaced, thinking it was defective (one of the HDD did kaput shortly after that), but after get replacement unit also the problem persists.

Any ideas as to what's the cause? Maybe the power supply is not providing enough juice? Or is it due to some other thing?

Hybz, I doubt it's a codec problem...as the movies were playing fine as per normal before the HDD were installed.

Netmatrix, the PATA bottleneck might be the issue. I'll have to check in again with my father to check if that is the case. As it is, I'm not entirely sure how he hooked up the HDD.

Btw, ty all for your prompt replies =)

How to enable DMA? i can't find it by right clicking and click properties =(