Question about HP Pavilion DV6449US Notebook

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The DVD writer to my HP Pavilion dv6449us laptop will not run a program installation disk and does not show up as a device in "My Computer". Occasionally I can start with a system boot disk created with DriveScrubber3 and with a Norton Ghost 12 & 15 System Recovery Disk. Also, the computer will not recognize an external DVD writer. The external drive did work for a long time after the internal DVD writer quit but then also went kaput. The computer does recognize an external hard drive. I had a chip replace last winter to fix the failure of the computer to boot up at all Ted Mills

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Click on the Start menu.
In the search box type in "regedit" without the quotation marks.
Go to the following key
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
In the right panel you'll see something along the lines of "UpperFilter" and "LowerFilter" you want to click on each "filter" key and hit delete. Click yes when it asks to confirm if you wish to delete the key.
Restart Windows.
If this doesn't fix it then it's a hardware problem - most likely the chip that was replaced has failed again.
In my personal opinion if this has happened before then the unit has a manufacturing defect - just junk it, not worth your time and money.

Posted on Sep 15, 2010

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