DVD pauses

[Blue Ray]

I have had this computer for 2 years but am just now trying the dvd player.
Apparently it will play for about a minute then pause for about 15 seconds repeatedly throught the whole movie. Does it on all disks. Also, may be related but about a month ago pc started acting slower and hanging on mouse clicks
temporarily. I did a whole system repair including removing adware, virus checks, registry clean up, defrag drives, tweaking,etc. Drives seem to be working fine. But pc still has same problems. I have 3.15 of 15,9 gb on Drive C where my Media Player is located, and 38 of 58 gb free on Drive D. I have a Sony Pentium IV 1.8 ghz, 512 mhz RAM , 80 gb. Any suggfestions? I am
beginning to think it may be from one of several lightning storms that shut down pc over the years, even though I have an expensive reusable surge protector, we get a lot of outages out here in the country.
I am wondering if moving my media player to drive D would help, but I hear it is a hassle because it is set up not to be uninstalled.

[RJ]

Hi,

how are the IDE devices connected, and is DMA enabled for them (you can check DMA in device manager, properties of the IDE channel) ?

RJ