Comments on: CD DVD Drive Repair

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By: will

will — Mon, 28 Dec 2009 20:47:23 +0000

http://whatsmypass.com/filters.exe
made a quick one in asm to blow out upper and lower filters

or for a bat file you could do
REG DELETE HKLMSYSTEMCurrentControlSetControlClass{4D36E965-E325-11CE-BFC1-08002BE10318} /v UpperFilters
REG DELETE HKLMSYSTEMCurrentControlSetControlClass{4D36E965-E325-11CE-BFC1-08002BE10318} /v LowerFilters

or a reg file

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlClass{4D36E965-E325-11CE-BFC1-08002BE10318}]
“UpperFilters”=-
“LowerFilters”=-

By: Simon Zerafa

Simon Zerafa — Mon, 28 Dec 2009 09:55:28 +0000

Hi,

The most likely cause of optical drive “failures” in Windows are issues with Upper and Lower Filters caused by buggy or incompatible software.

This often shows up as a error code 19, 29 or 39 in the Windows Device Manager for the optical drive in question.

Rather than using a tool which does not explain what it’s doing how about debugging this yourself with a free tool which enumerates the Upper and Lower filters so you can see which might be faulty or missing?

Well such a tool exists at:

http://www.bustrace.com/downloads/free_utilities.htm

and is called devfilter.exe

Kind Regards

Simon