CD/DVD drive not recognised

[Wychall]

I recently bought a Vaio VGN-AW11SB which I have been very pleased with. However as the Mcaffe trial period was up I have just installed AVG 9(a multi-user paid for version I already had). However the CD/DVD drive is not now being recognised. If I load a disk it doesn't show and I can't access it ( although I can hear the drive making all the right noises!). It was all working fine before so is it some simple software tweak, or have I maybe now got a faulty reader? The D drive is listed as a Fujitsu MHZ 2400BT G1 which it claims is working properly, and the driver is up to date. There is also a Matshita BD-MLT UJ230AS listed which shows ! against it with the comment that windows cannot download etc file may be corrupt etc. I note other comments about uninstalling these devices and the drivers will be reinstalled on reboot - is that foolproof? Also the alternative of going back to a previous restore point - I understand that my personal files will be ok but will it uninstall any new software including AVG? I am a little nervous about which is the safest/easiest route to follow. Its a shame because so far I have loved the Vaio and I hope this is only a minor hiccup. Any advice on the best way forward?

[Blencogo]

Hi Wychall and welcome to Club Vaio.

The Matshita is your DVD drive.

In Device Manager does it give an Error Code number? If it is code 19, 31, 32, 39 or 41 then a small registry edit should sort the problem.

I think your problem sounds like Error Code 39.

The fix is quite straightforward but involves changes to the registry and I recommend that you set a System Restore Point.

Then:

1.Click Start -> Run and type: REGEDIT , and hit enter. For Vista, type REGEDIT into the search box and open it).
2. Navigate to –

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}

click on this and locate UpperFilters in the right-hand window, (if it exists) right click on this and select Delete and then OK.
3. Under the same Registry Key locate LowerFilters, (if it exists) right click on this and select Delete and then OK.
4. Quit Registry Editor and re-boot the computer, new registry values will be created that will hopefully cure the problem.

After you remove the Upperfilters value and the Lowerfilters value, you may possibly need to re-install your burning software if it doesn't work – but not usually.

Good Luck!