Mainboard: Intel Corporation D845WN
Processor: Intel Pentium 4 @ 2400 MHz
Memory: 1024 MB (2 x 512 SDRAM )
Video Card: Nvidia Corp GeForce FX 5500 [NV34.6]
DVD-Rom: ATAPI DVD LS 8X16X8X16 (WinXP Generic Driver) BenQ Mfg
OS: WinXP Professionnal 5.01.2600 SP2
DirectX: Version 9.0c (September 2006)
DVD playback audio is choppy, slow, etc. Video seems OK for the most part. Here are the things I've done and the results:
1) Reduce graphic hardware acceleration to "disable all cursor and adv drawing"
R) playback audio improves during first 10-20 seconds but degrades thereafter. eg "this movie is funded by generous contributions frooom theeee Pewww Charitaaablle Truuusssst...."
2) Further reduce graphic hardware acceleration to "disable all directdraw and direct3D"
R) Windows Media Player, other players crash or display all black screen
3) Checked DMA settings
R) Secondary IDE Channel Device 0 (DVD) and 1 (CD) are both the same, eg
Transfer Mode=DMA if available
Current Transfer Mode=PIO Only
4) Tried to update driver for DVD, using a downloaded drive w/ flash tool
R) error message that said "the drive is not allowed to be updated" (sic)
5) Updated Intel mainboard chipset
R) Checked ATAPI controller in Device Manager and DMA Current Transfer mode was still PIO only.
OK, that's it. That's where my insight is derailed. Any help experts?