I have just put in a new Liton DVD-RW drive in my old emachines. I am
having this problem of XP hanging sometimes. For some reason while the
screen is black and XP loads it most important files just before the
boot screen it hangs. It power switches light stays on but when press
goes off but the system is still on. I can hear the fans. I then have
to take to power off. It sometimes does this and wont restart. I have
modified the BIOS settings so that it does dont detect what koind of
hardware is on the IDE buses. But still sometimes it does happen and
takes longer to clear. Usually the only way to get windows to boot up
is to have the DVD-RW drive tray open at the time of the boot and then
windows continues but sometimes this does not work and i just do
restart after restart and it evenutally boots up. I have a 1.2ghz
Celeron, 381MB RAM, Intergrated Graphics. what could be the problem
and how do i sort it out. I have also tried it with windows 2000 and
it does the same thing.

firstly, it is really important that
the device is properly connected
and the bios/cmos registers it
appropriately.

if it does not,
then no need to go further as
there is an equipment malfunction.

if it is registered by
the cmos/bios then software is
likely to be the cause of the problem.

you may need to go to the website
that manufacturers your dvd device
and look up faq's or download any
updates or patches.

i did find a posting from a different
server regarding a similar issue. a small
portion of the thread is pasted below for
you convenience. keep in mind that the
info below is no gaurantee of your success.
but i don't see what you have to loose
by researching it with your machine:
..

--------------------------------------------------------------------------------

..
After searching everywhere, I ended up here. When I read (below) that this
might work... I went into my registry and deleted the "Lower-filters" (didn't
see an "Upper-filter") .... rebooted and VOILA! ... found my DVD-CD RW drive
back.

My registry showed 4 "currentcontrolset" files:
currentcontrolset
currentcontrolset001
currentcontrolset002
currentcontrolset003

I found the "lowerfilter" in currentcontrolset001 and currentcontrolset3:

Start/Run/regedit
Navigate to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet001\Con trol\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
Highlight the "upperFilters" and "LowerFilters" if any and go to edit-delete.
I did the same in:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet003\Con trol\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}

Thank you, Thank you, Thank you ....
Regards,
CATO
..
..

--------------------------------------------------------------------------------

- db

naza wrote:

> I have just put in a new Liton DVD-RW drive in my old emachines. I am
> having this problem of XP hanging sometimes. For some reason while the
> screen is black and XP loads it most important files just before the
> boot screen it hangs. It power switches light stays on but when press
> goes off but the system is still on. I can hear the fans. I then have
> to take to power off. It sometimes does this and wont restart. I have
> modified the BIOS settings so that it does dont detect what koind of
> hardware is on the IDE buses. But still sometimes it does happen and
> takes longer to clear. Usually the only way to get windows to boot up
> is to have the DVD-RW drive tray open at the time of the boot and then
> windows continues but sometimes this does not work and i just do
> restart after restart and it evenutally boots up. I have a 1.2ghz
> Celeron, 381MB RAM, Intergrated Graphics. what could be the problem
> and how do i sort it out. I have also tried it with windows 2000 and
> it does the same thing.
>

The first thing to check is whether or not the DVD-RW drive has been
installed properly. There are usually jumpers allowing the drive to
be configured for Master, Slave or Cable Select; if it is set wrong,
then there is a good chance for the computer to hang up. The setting
depends on the way and where the DVD-RW drive is installed, i.e., is
it the second drive on the same IDE connector as the hard drive or is
it on its own IDE connector, etc. Read the manual. If problem persists,
then the next things to check would be to make sure that everything is
still seated firmly and properly.

Everything is setup correctly. The drive is fully working. I tested on
2 different PCs. Burns Cds and everything normally. I have tried two
IDE cables and same problem with both. It is now on a Primary and
Secondary Slave setup and the jumpers are set to CS ( Cable select)
and the BIOS reads this and put the DVD-RW as the master as that is
how it is connected. I have tried just the DVD-RW on the cable but
does not make any improvements. I have updated the firmware today from
Liteon's finally finished site but no change. So most likely software
problem. I am currently trying the method in the one of the post
obove. I will keep you posted.

ok.

sometimes it is easier simply disconnecting
the device from the mobo if
you cannot access your registry to modify
it.


"naza" <naza911@googlemail.com> wrote in message news:1173647814.116202.312660@s48g2000cws.googlegr oups.com...
Everything is setup correctly. The drive is fully working. I tested on
2 different PCs. Burns Cds and everything normally. I have tried two
IDE cables and same problem with both. It is now on a Primary and
Secondary Slave setup and the jumpers are set to CS ( Cable select)
and the BIOS reads this and put the DVD-RW as the master as that is
how it is connected. I have tried just the DVD-RW on the cable but
does not make any improvements. I have updated the firmware today from
Liteon's finally finished site but no change. So most likely software
problem. I am currently trying the method in the one of the post
obove. I will keep you posted.

naza wrote:

> Everything is setup correctly. The drive is fully working. I tested on
> 2 different PCs. Burns Cds and everything normally. I have tried two
> IDE cables and same problem with both. It is now on a Primary and
> Secondary Slave setup and the jumpers are set to CS ( Cable select)
> and the BIOS reads this and put the DVD-RW as the master as that is
> how it is connected. I have tried just the DVD-RW on the cable but
> does not make any improvements. I have updated the firmware today from
> Liteon's finally finished site but no change. So most likely software
> problem. I am currently trying the method in the one of the post
> obove. I will keep you posted.
>

If the DVD-RW drive is identified as the Master, then, depending on
the bios that is installed in the computer, the computer will stop
for a specific time interval, allowing a search of the "master" drive
for the boot sector, before moving on to the next drive in-line. This
would account for the "hang" time.

The better configuration solutions are these: (a) Under Cable Select,
the boot drive (i.e., the HD), in the first position and the DVD drive
in the second position; (b) Using single IDE controller, the HD jumpered
as Master and the DVD drive jumpered as Slave, on a standard IDE cable;
or, (c) Using both primary and secondary IDE controllers, HD connected
to the primary IDE controller while the DVD drive is connected to the
secondary IDE controller, both jumpered accordingly.

I think i might have not made it clear. The HD is on the primary IDE
channel as the master for that cable. On the secondary IDE channel
(the second cable) there are 2 DVD drives. One is the DVD-RW which is
the master and the other is a normal DVD-ROM drive which is set as
slave. Through the BIOS at the moment the BIOS is told not to search
for the drives and i have manually entered the settings that it needs.
the settings are DMA and what kind of device it is. I think the
problem lies within windows rather than the BIOS as i have tried many
BIOS setting combonations. One problem is that thier may not be enough
power getting to it t boot time. The computer is currently running at
full capacity and no more spare slots are avalaible. what sort of
symptoms would is see if the PSU could not handle the load or was
faulty.

well, the psu could be
a factor and they do make
them at higher ratings now
a days especially for adding
more equipment.

i suppose that if the dvd-rw
worked perfectly while the
dvd rom was disconnected,
this would be a clue.

and if the dvd-rom
worked perfectly while
the dvd rw was disconnected
then this again would be a clue.

however, if they are both connected
and something isn't working
then this is a clue as well.

my pc has a dvd-rw and
a cd-rw and they both
worked great and without
any extra effort on my part.

but if i recall, the cd rw needed
to be the boot/master and
not the slave/secondary.
but i am sure you tried
switching their roles already.

this brings up an interesting
point, will you be able to
boot your windows cd if
you have 2 dvds readers
instead?

what you can probably
do is to get a higher rating
psu since they are pretty cheap.

if it works then great

if not then you can likely return
it for credit or keep it.

but my guess is that the on/off
logic is affective for digital devices.

in that, if the device cannot
get the exact power it requires,
then it will show as not connected
by the o.s.

- db
"naza" <naza911@googlemail.com> wrote in message news:1173715794.973252.40020@n33g2000cwc.googlegro ups.com...
I think i might have not made it clear. The HD is on the primary IDE
channel as the master for that cable. On the secondary IDE channel
(the second cable) there are 2 DVD drives. One is the DVD-RW which is
the master and the other is a normal DVD-ROM drive which is set as
slave. Through the BIOS at the moment the BIOS is told not to search
for the drives and i have manually entered the settings that it needs.
the settings are DMA and what kind of device it is. I think the
problem lies within windows rather than the BIOS as i have tried many
BIOS setting combonations. One problem is that thier may not be enough
power getting to it t boot time. The computer is currently running at
full capacity and no more spare slots are avalaible. what sort of
symptoms would is see if the PSU could not handle the load or was
faulty.