I have 2 optical drives a DVD-Rom & DVD-rw.They are in a Sony Vaio with xp-pro Sp2. Both worked fine up until i uninstalled a Roxio easy CD creator version 4 that i was having a problem with this morning. Now neither appears in "My Computer".There are yellow exclamation marks beside both in the "Device manager". I don't know if they are related but there are ALSO yellow question marks beside the following "Other devices",SM Bus Controller" and "16550" . I have shutdown/restarted the computer a number of times-no change. I uninstalled (via remove hardware) one of the optical devices. It is found and a new hardware found appears at restart but it doesn't change the outcome. Doing a driver install from hardware says drivers installed are best for the device but no hardware device was found? This has to be a software problem with these 2 drives brought on by the problem with the software uninstall. Suggestions please. truenorthYou may want to try re-installing your MBoard chipset drivers...
This will cause no harm even if they are already installed and may solve the issue...OK will try and find them and will advise.thanks,truenorthOk now the troubles begin. As per the enclosed link you will see the start of them. The model # on the back of the machine is "PVC 7764" (i had this problem a long while ago and did as stated here) http://www.resellerratings.com/forum/tech-support/112513-vaio-pcv7764-drivers.html
Following that model i get: http://esupport.sony.com/US/perl/swu-download.pl?mdl=PCVRXA842&upd_id=412&os_id=7&ULA=YES#
Then when i move on and get into the download i get windows telling me
1.This page is not designed to run on this computer.
2.This UPDATE is not intended for use with your computer.
So i am at a dead end here. truenorth
P.S. Just to SAVE some time in case someone comes up with an alternative model number--another search on the "PCV 7764" came up with this; http://esupport.sony.com/US/perl/swu-download.pl?mdl=PCVRX850&upd_id=45&os_id=7&ULA=YES
Unfortunately same end result as stated above.

P.P.S. Here is a partial everest scan of the MOBo

Motherboard:
CPU Type AMD Athlon XP, 2000 MHz (15 x 133) 2400+
Motherboard Name Asus A7N266-VX
Motherboard Chipset nVIDIA nForce 220 (DDR)
System Memory 480 MB (DDR SDRAM)
BIOS Type Award Medallion (08/20/02)
Communication Port Printer Port (LPT1)
I'll do some hunting and return...OK more mud for the water. When i go into the BIOS the 2 optical drives are there.Under "Boot" the "pioneer " is listed as "secondary master" and the "Sony" is "Secondary Slave". However they are BOTH listed as "disabled". Don't know why and also don't know how to ENABLE them (nothing seems to present itself to allow the change). Now the real mud. This computer has dual operating systems. Default is to Win xp-pro but win 98 se is also on it. As stated the 2 drives do NOT APPEAR in "my computer-xp" but they both do in win98. Plus although i cannot hear sound in win98 (another problem and i don't care as i never use win98 anymore on that computer) both drives bring up a media player and DO appear to be playing the tracks. So i believe it is safe to say that the 2 drives are not at fault (i didn't believe they were anyway--just don't want to waste CH forum members time chasing that rabbit). I have NOT been able to locate any chipset drivers for the "north bridge motherboard nForce-A7N266VX". Please help.truenorthPatio--thank's i'll be waiting--note my post as you were posting--more info. provided, truenorthTry here: http://driverscollection.com/?H=nForce%20220&By=NVidia

Also...

One of these may help:
1. Uninstall the drive through Device Manager.
Restart computer. The drive will be automatically reinstalled.
or...
2. http://support.microsoft.com/kb/314060
Restart computer.
or...
3. Download, and run Restore Missing CD Drive patch
Double click on cdgone.zip to unzip it.
Right click on cdgone.reg, click Merge.
Accept registry merge.
Restart computer.
or...
4. Go to Device Manager, click a "+" sign next to IDE ATA/ATAPI Controllers.
You'll see two items:
- ATA Channel0 (or Primary Channel)
- ATA Channel1 (or Secondary Channel)
Right click on each of them, and click Uninstall. Confirm.
Restart Windows. They'll be automatically reinstalled.YAHOO! Thank you Broni. Back in business. I looked at the "Try here" 1st recommendation 1st.Saw what could be some dire consequences if things went wrong so then went and had a look at 2. http://support.microsoft.com/kb/314060. Opted to try the "let me fix it " option. That fixed it. However noting the caution that some audio player software could be adversely effected by the "fix it" program i was not dismayed that my default player "Musicmatch version 9 " no longer worked properly. That certainly can easily be remedied.
If you don't mind i am going to post your complete reply to me on another post that i was trying to help another user with a similar problem recently. To the best of my knowledge their problem remains unsolved. I shall give the credit where it belongs (to you).Thanks again and thank you too patio for giving my issue your attention. truenorth
Nice job couldn't have done it without your help. truenorth