Tag Archives: lowerfilters

CD/DVD has dissappeared in XP (A driver (service) for this device has been disabled. An alternate driver may be providing this functionality (code 32))

Computer Aid Posted on by

A customer needed a new CD drive, as she needed to install an office xp update, and it was asking for the original CD.

When I get there, I notice the PC is really slow (for a 2.67Ghz celeron, with 512MB RAM)

I have a quick look at task manager, and I see the system is using 460MB… quite high for an xp system.

I leave the RAM situation for the moment, and try the CD drive… but it won’t eject… looks like a faulty drive. I open up the case, and the drive has power connected, so there is no reason for it not to eject.

I install a new DVDRW, but when windows boots up, the drive is not in windows explorer.

Odd: the bios detects it ok.

While I’m looking around windows, I decide to do some quick tuning… lots of rubbish auto-starting.

I look into device manager, and i see the drive (with a yellow !). this usually means no drivers.

So I get it to automatically search for the most recent drivers, but xp finds nothing better.

Strange, as new DVDRW drives are just plug in and go… no need to look for odd drivers.

I try another (used) cd drive, but it also fails to detect. Ok, looks like a windows problem.

Customer says she recently checked everything (ran av scan, also scanned using defender, spybot, regscrub, etc). Ah: regscrub I don’t like the idea of a program automatically altering the registry (Unless I really trust it).

Anyway, I decide to look into a possible registry problem.

I look more closely at the device manager properties, and the error it gives is: A driver (service) for this device has been disabled. An alternate driver may be providing this functionality (code 32)

If only I had noticed this earlier, I wouldn’t have wasted time searching for a device driver 🙁

I soon find that the problem is related to UpperFilters and LowerFilters… now this sounds familiar…

Sure enough, I start regedit, and go to HKLM-system-currentcontrolset-control-class-{4d36e965-e325-11ce-bfc1-08002be10318} And remove UpperFilters (the entry contained info about incd).

Apparently, I should also remove LowerFilters from the same location, but its not there.

I also disable any incd services and auto-startup programs.

Reboot, and now the DVDRW works. I install the office updates without a hitch. All is good again.

vista loses DVD driver (matshita UJ-891S ) code 39 on a toshiba laptop

Computer Aid Posted on by

Customer find he suddenly cannot use his vista laptop to read any cd/dvd discs.

I notice that the vista device manager shows the dvd drive (a matshita uj-891S) has a code 39 error.

On the net, some people suggest getting the most recent drivers (but vista believes it has the most recent drivers anyway), and others suggest the MS support page at: http://support.microsoft.com/default.aspx/kb/929461

I start going through the MS instructions, but I see that there in no registry entry for UpperFilters, just LowerFilters.

I wing it, and delete the LowerFilters setting, and after a reboot, the drive is usable again!

Pioneer DVR-111D CD DVD-RW drive. code 19

Computer Aid Posted on by

I got a new DVD-RW (Pioneer DVR-111D) drive, installed it into my “new” office main PC, but after a reboot, the drive was not detected.

The tray ejects, the front panel LED lights up, all the cables, power, etc is correct…

A look at the device manager (control panel -> system -> hardware -> device manager) shows that there is some problem with the registry. (an yellow sign, and an error 19).

A quick search finds: http://support.microsoft.com/?kbid=314060

Removing the upperfilters and lowerfilters registry keys did the trick.