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the computer can not open DVD, as if does not recognize it

by Sharif / June 3, 2008 9:12 PM PDT

Hello everybody

Recently I installed a software called Daemon Tools in my laptop & since then my laptop can not recognize DVDs, it can play the CDs but not DVD anymore.

The dvd reader drive seems work properly by checking the hardwares property, & the drivers for the drive are up to date.

I already unistalled the software "Daemon Tools", but the problem still there, the computer can not recognize the DVDs.

the DVD reader is: HL-DT-ST DVD RAM GSA-T20N ATA Device, vista home premium.

Your kind help is highly appreciated.

Waiting to hear from you.


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by R. Proffitt Forum moderator / June 4, 2008 12:27 AM PDT

Type into google this...


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it is not the drive which is not recognized, it is the DVD
by Sharif / June 4, 2008 4:59 AM PDT
In reply to: Hint.

Thanks for your reply, but I searched through google, but it seems the UPPERFILTERS LOWERFILTERS removal is advised when the computer can not recognize the DVD drive, this is not the case in my situation.

My computer can recognize the drive, when I click on the "my computer" icon it shows the DVD Drive, & when I checked the device manager, the DVD Drive is showing there & up to the device manager it should be working properly (no yellow triangle or exclamations mark)

So, what do you suggest?

Thanks in advance for your kind help.

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(NT) Then I'll advise you do this in this case.
by R. Proffitt Forum moderator / June 4, 2008 5:54 AM PDT
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The problem is still there
by Sharif / June 5, 2008 1:52 AM PDT

Thanks for you help
I did what you advised me. I found only the LowerFilters and I removed it, but I couldn't find the UpperFilters.

The problem is still the same, the DVD drive can open the CDs but Can not open the DVDs. I also uninstalled the drivers and restarted the computer and the drivers installed automatically as it should be, but the problem is still there, the drive can read the CDs but not anymore the DVDs.

Waiting for your kind help


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Last hurrahs.
by R. Proffitt Forum moderator / June 5, 2008 1:57 AM PDT

The drive may have expired. To test this I use a bootable DVD such as Vista or Linux. If that fails the drive has failed and we swap it out.

You may not have a bootable DVD (any will do for that test) so try a factory made DVD and VLC PLAYER to try to play said DVD.

We are reaching the point where it's one of the common drive failure modes.

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it was the DVD lens
by Sharif / June 6, 2008 7:21 AM PDT
In reply to: Last hurrahs.

Hi Bob

Thanks for your reply

In fact I just cleaned the DVD lens, & the DVD starts reading the DVD again & the problem solved.


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