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Originally Posted by warhawk22
Hey everybody, I know this is a frustrating problem. Below are the directions given asfan42069, but I made changes where they were needed according to HP. It worked for me and I hope it helps you.
click the start menu
find the search box (located at directly above the start menu button)
type in "regedit" and press enter
you might get a warning asking if you want to open the "Registry Edit"
click yes
now you should have the registry edit program open
double click on "computer"
double click on "HKEY_LOCAL_MACHINE"
double click on "SYSTEM"
double click on "CurrentControlSet"
double click on "Control"
double click on "Class"
double click on "{4D36E965-E325-11CE-BFC1-08002BE10318} it has to be this EXACT file...do not touch the others.
now you should see a list of items on the right side of the window
and there is an item named "lowerfilter" or "upperfilter"
anyway... right click on it and click delete both.
once deleted, open the "device manager". Start>All Programs>Accessories>Run> type in devmgmt.msc and click "run"
Once you are in the device manager, delete the DVD/CD Rom drives.
after you have deleted the drives, click on the "action" menu located next to the start menu.
click on "scan for hardware changes"
Your computer should automatically re-install your dvd drivers and everything should work. It did for me.
Hope I helped you!
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Hello to all. New to this forum. I had the same problem and this solution didn't work. I used SFDNwin to reload the original firmware and worked but allthough the drive is now usable it will not record. From a little research I did turns out that this could be a problem with deleting lowerfilter. does anyone now how to reset them in regedit? System is hp pavillion entertainment dv6710ev and the drive is ts-l632n. Any help would be appreciated cause I'm on a business trip and in a dead end. thanks in advance