Clean upper and lower filters windows 7

Last reply by mrmoore3 Unsolved. John68 2 Bronze. Upper and Lower Filters Missing. All forum topics Previous Topic Next Topic. Replies Hi, John: Not surprisingly, Apple tech support is the best place for getting help with iTunes. What next?

Regards John Watson. John: If you uninstall and reinstall iTunes it should reinstall the filters. Regards John. Hi Osprey, Do you have any further thoughts on my missing filters and how I can get back the registry settings to allow me to burn CD's and play Audio CD's?

Hi, John: Sorry for not getting back. TheWhale 2 Bronze. My apologies for neglecting to follow the link you left this morning. I mistakenly thought it was a link to a "Fix It" tool I had tried earlier. At any rate, your instructions were spot on and my cd drive is back up and running. Thanks much. I recommend you bookmark that link, because for whatever reason, Microsoft has removed it as an alternative to the automated fix-it page you get when you do a search.

Didn't find what you were looking for? Ask the community. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for. Search instead for. Did you mean:. Need Windows 11 help?

Each digit subkey is unique and corresponds to a particular type, or class, of hardware in Device Manager.

Using this list , find the correct Class GUID corresponding to the type of hardware that you're seeing the Device Manager error code for. Many of these GUIDs look the same but they're definitely not. They are all unique. Select the registry subkey corresponding to the device's Class GUID that you determined in the last step.

In the results that appear on the window on the right, locate the UpperFilters and LowerFilters values. If you don't see either registry values listed, this solution isn't for you. Double-check that you're looking at the correct device class but if you're sure you are, you'll have to try a different solution from our How to Fix Device Manager Error Codes guide.

Right-click or tap-and-hold on UpperFilters and choose Delete. Choose Yes to the "Deleting certain registry values could cause system instability. Are you sure you want to permanently delete this value? You might also see an UpperFilters. Deleting them probably won't hurt anything but neither one is causing the Device Manager error code you're seeing. Repeat Step 8 with the LowerFilters value.

Restart your computer. Even if drive is not shown continue below. Then work your way through these - remember the drive could be bad, could have a loose cable or slight corrosion on the contacts usually for a laptop and other issues.

Remove ALL power, then check cables in both ends. Remove and replace, do not just snug. For laptops you can often clean the power and data contacts with a pencil eraser. Some DVD drives do not use the Windows default drivers so check with the System maker and device maker to see if there is firmware or drivers for you drive if needed.

So it is not unusual for 1 or 2 parts to not function while the others do so properly.