VIA KT400 and UDMA? (DVD-RW NEC-2510a)

Help!

I have a Gigabyte GA-7VA motherboard (VIA KT400 chipset) and
DVD-RW NEC-2510a (supports UDMA33). My DVD-RW drive actually can
work only in PIA-mode! UDMA can be enabled, but drive cannot see
any CD or DVD disks when switched to UDMA. I hava latest VIA
hyperion drivers and BIOS update. What should I do?

P.S. CD-RW works fine in UDMA-mode with GA-7VA. Also I tried to
plug my NEC DVD-RW-drive to other motherboards: it’s work in UDMA with no
problems only on Intel chipsets.

OS: WinXP SP2.

Try rolling back to the Windows XP provided IDE drivers.
Try a different 80 wire IDE cable.

I tried both native WinXP drivers and VIA provided drivers. Nothing works.
Also I tried to use different 40- and 80-wire cables. Without any effect :frowning:

Read through the forums at www.viaarena.com I’m sure I’ve read about this before.

Via’s been a real PITA lately with their drivers and M$ compatability.

How about a clean install of Windows with the drive connected to the PC? Still cannot run in DMA mode?

Also, DO NOT install the new via ide accelerator driver!!!

Its caused a lot of grief to many via customers. Supposedly they’re working real hard to fix the problem.

Read through the forums at www.viaarena.com

I’m already searching for answer at www.viaarena.com. In fact, I have been redirected here from VIA Arena :wink:

How about a clean install of Windows with the drive connected to the PC? Still cannot run in DMA mode?

When I run Windows XP (I tried WinXP and WinXP SP2) installation from bootable CD, it runs ok, but when installation is complete and OS is starting -> DVD becomes “blind” and doesn’t recognize any CD or DVD, also OS hungs up for several minutes. When I switch drive to PIO mode, it begin to function normally. So, DVD doesn’t work in UDMA even on clean system.
P.S. during my exmeriments I reinstalled system about 10 times :slight_smile:

Also, DO NOT install the new via ide accelerator driver!!!

I tried to install it, installation completed, but nothing changed :slight_smile:

…I’m so tired of searching for answer :frowning:

Hmm. Using a 2500 on same MB no problemo. Weird.