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Windows 7: Dvd and cd rom drives not recognized

25 Jan 2009   #1

Windows 7 x64 ultimate beta
 
 
Dvd and cd rom drives not recognized

after I installed the windows 7 x64 beta my internal dvd-rom drive has failed to be recognized. I tried to use my external usb 2.0 cdrw drive and that isn't being recognized either. What is up and how can i fix it?

p.s. i am using a Satellite A215 - S4747 laptop

My System SpecsSystem Spec
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26 Jan 2009   #2

Windows 7 x64 ultimate beta
 
 

This is the error message I find:
Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52)
My System SpecsSystem Spec
26 Jan 2009   #3

windows 7 64 bit 7.000
 
 
go to the registry editor regedit and delete the upper and lower fields for the dvd

Quote   Quote: Originally Posted by alanmwilliamson View Post
after I installed the windows 7 x64 beta my internal dvd-rom drive has failed to be recognized. I tried to use my external usb 2.0 cdrw drive and that isn't being recognized either. What is up and how can i fix it?

p.s. i am using a Satellite A215 - S4747 laptop
navigate to hklocal machine -software - windows, find the dvd burner keys and delete the upper and / or lower fields... one of them got deleted so delete the remaining one and it will reset it for you.
My System SpecsSystem Spec
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26 Jan 2009   #4

Windows 7 x64 ultimate beta
 
 

Quote   Quote: Originally Posted by 1geron View Post
navigate to hklocal machine -software - windows, find the dvd burner keys and delete the upper and / or lower fields... one of them got deleted so delete the remaining one and it will reset it for you.
the 'windows' portion under hklocal machine - software doesnt exist
My System SpecsSystem Spec
26 Jan 2009   #5

windows 7 64 bit 7.000
 
 

Quote   Quote: Originally Posted by alanmwilliamson View Post
the 'windows' portion under hklocal machine - software doesnt exist

yeah this is where I am not sure where to go by memory to fix it. When this happened to me on the satellite it was because I installed Roxio dvd software. So this is one way to find where the key is stored. Type in to google ( you can type a thirty word question or sentence into the google search box) ,, " computer does not detect cd dvd burner after installing Windows seven roxio toast my dvd hkeys" this sentence sounds wierd but it will have a couple of padegs of good results usually the first result or two will have some info as to wheree the exact location of the keys will be present just scan through the results methodically and when you find the upper and lower fields just erase what you have found ,,i.e. the upper or the lower or bothe. there will be a few lines of info there when you get to the correct address of the key and only two lines would be the upperfield and the lowere field so dont erase evrything there... just where it says upper and where it says lower. Also you can do your search with the word vista instead of windows seven since windows seven is based on vista and there is more information on vista then windows seven and the hkey addresses are the same.
My System SpecsSystem Spec
26 Jan 2009   #6

Windows 7 x64 ultimate beta
 
 

Quote   Quote: Originally Posted by 1geron View Post
yeah this is where I am not sure where to go by memory to fix it. When this happened to me on the satellite it was because I installed Roxio dvd software. So this is one way to find where the key is stored. Type in to google ( you can type a thirty word question or sentence into the google search box) ,, " computer does not detect cd dvd burner after installing Windows seven roxio toast my dvd hkeys" this sentence sounds wierd but it will have a couple of padegs of good results usually the first result or two will have some info as to wheree the exact location of the keys will be present just scan through the results methodically and when you find the upper and lower fields just erase what you have found ,,i.e. the upper or the lower or bothe. there will be a few lines of info there when you get to the correct address of the key and only two lines would be the upperfield and the lowere field so dont erase evrything there... just where it says upper and where it says lower. Also you can do your search with the word vista instead of windows seven since windows seven is based on vista and there is more information on vista then windows seven and the hkey addresses are the same.
uh, yea, entered that sentence into google and google came up with nothing.
My System SpecsSystem Spec
26 Jan 2009   #7

windows 7 64 bit 7.000
 
 

Quote   Quote: Originally Posted by alanmwilliamson View Post
uh, yea, entered that sentence into google and google came up with nothing.
i meant you have to play with the sentence a few times bro.

here this sentence works, " dvd keys address in hkey local machine windows vista upper and lower field "
My System SpecsSystem Spec
26 Jan 2009   #8

Windows 7 x64 ultimate beta
 
 

already modified it and found the key, thanks!
My System SpecsSystem Spec
26 Jan 2009   #9

windows 7 64 bit 7.000
 
 

what did you do when you modiefied it? and did it fix it?
My System SpecsSystem Spec
26 Jan 2009   #10

Windows 7 x64 ultimate beta
 
 

Quote   Quote: Originally Posted by 1geron View Post
what did you do when you modiefied it? and did it fix it?
I just deleted the lower upper entry in the reg key location. and yes, it fixed the problem
My System SpecsSystem Spec
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 Dvd and cd rom drives not recognized




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