Some ideas:

Use a different CD-ROM driver. I recommend the one from Acer. It's VIDE-CDD.SYS. http://www.mdgx.com/drv.htm

Apart from that you have't told us anything to work with. Tell us everything about your system!

I tried the vide-cdd.sys driver and it still doesn't work.

My system is

486DX2-66
Magitronic GA-486-VC socket 3 motherboard
16mb 30 pin 70ns simm memory
Real Power 230 Watt AT power supply
Diamond Viper Weitek power 9000 vesa local bus video card
Vesa local bus IDE controller card
853mb Western Digital Caviar 2850 IDE hard drive
Hitachi CDR-7730 4x IDE cd-rom drive
Sound Blaster 32 CT3600
Midiman MM-401
Roland MT-32 (old)
DOS 6.22

Perhaps it is some sort of IRQ problem. Can you post your autoexec.bat and config.sys ?

Also, are your hard drive and CD-ROM both plugged into the VLB controller card?

Jorpho wrote:

Perhaps it is some sort of IRQ problem. Can you post your autoexec.bat and config.sys ?

Also, are your hard drive and CD-ROM both plugged into the VLB controller card?

Yes, the hard drive and cd-rom drive are plugged into the VLB controller. Hard drive is master and cd-rom is slave. Here are my autoexec.bat and config.sys. I have 611K of conventional memory with this setup

AUTOEXEC.BAT

SET SOUND=C:\SB16
SET BLASTER=A220 I5 D1 H5 P300 E620 T6
SET MIDI=SYNTH:1 MAP:E MODE:0
SET CTCM=C:\CTCM
C:\SB16\DIAGNOSE /S
C:\SB16\AWEUTIL /S
C:\SB16\MIXERSET /P /Q
C:\CTCM\CTCU /S
@echo off
SET PATH=C:\DOS
C:\DOS\SMARTDRV.EXE
LH=C:\VESA\VPRMODE.EXE VESA
LH=C:\MOUSE\CTMOUSE.EXE
LH=C:\DOS\MSCDEX.EXE /D:MSCD001 /M:15

CONFIG.SYS

DEVICE=C:\DOS\HIMEM.SYS
DEVICE=C:\DOS\EMM386.EXE RAM
BUFFERS=45
FILES=30
DOS=UMB
LASTDRIVE=E
FCBS=4,0
DEVICE=C:\CTCM\CTCM.EXE
DOS=HIGH
STACKS=9,256
DEVICEHIGH=C:\CDROM\VIDE-CDD.SYS /D:MSCD001

what happens if you play the vid from a hdd ?

It does the same thing from the hard drive. If I select no sound and play a video it works, I tried it with two games so far. If I enable sound it crashes when the video plays weather its playing from the hard drive or cd-rom drive.

Well, does it make any difference if you disable the CD-ROM drivers? Or SmartDrive?

Also, I think you need to use "DOS=HIGH,UMB" in your config.sys (preferably after HIMEM but before EMM386); I'm not sure it works on two separate lines.

I'm surprised that no one mentionned this before, but these are general sympthoms of PSU failure. I've experienced this a dozen times on more modern systems and it was always the PSU.

btw, never plug HDD and CD-ROM on the same cable. It makes HDD run a lot slower.

RacoonRider wrote:

btw, never plug HDD and CD-ROM on the same cable. It makes HDD run a lot slower.

I didn't know that, I'll have to check my systems - I think I'm doing that in a couple of them.

try removing

BUFFERS=45
FILES=30
FCBS=4,0
STACKS=9,256

also try differnt dos versions including dr dos

ps: are you using the ide port on the sb16 ? if not try removing the DEVICE=C:\CTCM\CTCM.EXE
line from config.sys

read this:
Angel Devoid won't run with CTCM.EXE in CONFIG.SYS and FMV choppy.

Davros wrote:

ps: are you using the ide port on the sb16 ?

It's an SB32.

I have tried everything. I'm going to get another motherboard. Perhaps that's the problem.

Are there any memory settings in the BIOS?

Yes, I have tried every different setting for memory in the bios and it doesn't work. I think I found the real problem.

AlexDroog wrote:

Yes, I have tried every different setting for memory in the bios and it doesn't work. I think I found the real problem.

Perhaps you could reveal the secret

Its fixed. It was my vlb controller card.