DVD ROM is not reading DVDs

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Hello all. I wanted to add to your postings, and bay my own distain with a similiar suituation. We recently inherrited an IBM ThinkPad laptop computer. I re-installed windows, as the old system was horribly and errivisably corrupt. Upon doing so, and re-installing ( i used win ME) the DVD rom drive in the laptop suddenly decided to become a cd- rom drive. In the device manager, it appears under CD Rom Drives as what it is -- Mit****a DVD Rom SR 8175.
However, under My Computer, it appears as Compact Disk Drive D. Sugestions? Questions? Comments??? I have un-installed this device, and re-installed it from the device manager... nothing is helping. DVD 's are not recognized, and CD's can play. The thinkpad we have is an A22 model.... Worse yet, Panasonic, the makers of this DVD Rom, have left it behind in their product line, so there is no more support for this drive available, including drivers.... Please..... help if you can! : (

Mits hi ta DVD Rom... why wont it let me write the name of the drive?? the previous should have appeared as all one word.. but it appears to have been censored.. hopefully this will work.


Posts: 5,746   +14
jorge_ddl said:
Hello, I have a VAIO laptop model VGNA290F with CD/DVD RW sony DVD RW DW-D56A PFS3 with a similar problem, I can read Data CDs and play DVD´s apparently without any problem, but I cant play Audio CD´s. Actually It´s strange because it plays the CD but after 1 or 2 minutes it just stops playing the song. When I try to play a different track sometimes it does the same other times it won´t play anything else until I reboot.

My question is, can this be a hardware problem? I´d thought that if this is the case it won´t play anything at all, so I consider a software problem but I am not sure. Please help! :confused:

I have tried without success the following:
- Cleaning CD Lens with a dry q-tip
- Uninstalling Nero 7 and InCD
- Uninstalling AnyDVD
- Updating firmware
- changing to different (non scratched) audio cds

Any help would be G R E A T L Y Appreciated fellows

Thanks in Advance
this sounds like more of a driver/ software issue.
hello all . jambo as we say in kenya .
i have a sony vaio VGN-A417M with a SONY DVD RW DW-D56A drive
after a recording it stopped reading CD ROMs and AUDIO / Music CDs
it plays DVDs just fine. i've tried everything from the suggestions above and from the sony vaio site.. this is driving me nuts.. anyone been able to sort out this .. i'd really be obliged .. thank you ..best for the festive season to all ..rgds.. sharad
wgwara said:
I have tried updating the firmware but interestingly the firmware downloaded from the Sony website didn't recognise the drive :(

I tried uninstalling the drive and reinstalling it but that didn't help for long.

Finally I disabled the DLA functionality. (I was using Sonic DLA) and after disabling it the drive reads all DVDs and CDs with no problem. At least so far. :)

Hello ! please excuse my ignorance .. but i Have Sonic on my laptop too ! how does one disable the DLA ...
thank you
I had a very similar problem with my dvd player. If I inserted a disk and tried to double click the drive in My Computer I would get an 'Incorrectt Function' error. Tried uninstalling the device and let the system find it again and still had the error. This is how I fixed it:
1. Right click My Computer and click Manage.
2. Click on Device Manager and right click the dvd drive and then click Properties.
3. Go to the Driver tab and click Driver Details. You should see:

If you see any other drivers listed follow the path to the folder (write down the name of the file without the .sys) and delete the file.
4. Start > Run > regedit
5. Search for the file name (eg if the driver file was named PxHelp20.sys search for PxHelp20) and delete any values found.
6. Go back to Device Manager, right click the dvd drive and click Uninstall.
7. Reboot and this should fix it.
I have the same problem.
My SONY VAIO laptop DVD RW DW-D56A drive can write sony's brand DVD+R disk without problem, but if I insert the disk and try to double click the drive in My Computer, it seems that the drive spins for a while and does nothing more. The same disk I can read Ok with my another desktop PC.
To humberman :
May you help me, I can not understand the step 5 of your post
"..Search for the file name ...PxHelp20.sys ... and delete any values found."
Actually, I found the name PxHelp20.sys in the Driver Details Properties.
Do you mean only the key : HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\PxHelp20
or everything that I found in the registry?
I did found a lot of keys and values with the word "PxHelp20" in the registry.
Thanks in advance.


Posts: 13   +0
Geek Squad #851 said:
If your drive reads cd's, but not dvd's That indicates that the hardware works fine. You will need to edit the registry inorder to fix this problem.

1) click the start menu
2) click on "run"
3) type "regedit" and click ok
4) go to string key "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
5) delete "upper filters" and "lower filters in the right side window.
6) right click my computer in the start menu.
7) click properties
8) go to the hardware tab
9) click device manager
10) expand the dvd/cdrom drives
11) right click the dvd rom and click uninstall
12) restart computer

after restarting, windows should automatically install a clean ROM drive and it should read DVDs just fine if you have the correct DVD decoders.

Computer services available, call 1800geeksquad

Will this work if the drive reads dvd's as cd's? See https://www.techspot.com/vb/showthread.php?p=515143

Me in another thread said:
I recently purchased (by mistake) an OEM Liteon LH-20A1H-185 20X Internal Dual Layer Lightscribe DVDRW and installed it in my pc. As soon as I powered on, Windows XP found it and it was recognized in "My Computer" as a DVD drive. Next I purchased some blank DVD+RW disks and put one in so that I could move clutter off of my HDD. Well, it doesn't see the DVD as a DVD, and instead sees a cd with the capacity of a cd. I checked the driver and it seems that I have the latest version. What can I do to get this thing working right?
thanks geeksquad 851, your directions solved my problem, which was that the DW-56A DVD drive did't show up in the windows explorer. (Error Code 19, corrupt registry info)

i uninstalled alcohol 120 and winoncd (the problem occured roughly around the time of winoncd's installation (on a custom xp version)), deleted the upper and lower filters in the registry and rebooted; the drive showed up again.

thanks so much for saving me a reinstallation.
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