How do I delete UpperFilters and LowerFilters in registry?
Table of Contents
How do I delete UpperFilters and LowerFilters in registry?
What to Know
- Open Registry Editor and go to HKEY_LOCAL_MACHINE > System > CurrentControlSet > Control > Class.
- Determine the Class GUID for the hardware device that you’re seeing the error code for, then select the corresponding subkey.
- Right-click UpperFilters and LowerFilters, and select Delete and Yes to confirm.
What is lower filter?
A low-pass filter is a filter that passes signals with a frequency lower than a selected cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency.
Where is UpperFilters in registry?
In the Open box, type regedit, and then click OK. In the right pane, click UpperFilters. Note You may also see an UpperFilters.
Why is my CD-ROM not reading discs?
A dirty or scratched disc surface is the most common reason for a CD/DVD issue when inserted into a computer. Check the disc for damage and confirm that the disc is compatible with your computer. Clean the disc and check for damage: Clean any dust or smudges from the disc with filtered water and a lint free cloth.
What to do if CD is not reading?
If your CD/DVD drive is having trouble recognizing a disc:
- If you know the disc isn’t blank, check whether the data surface is damaged.
- Try a different disc.
- Try the disc in another computer’s drive.
- Try cleaning the drive with a CD/DVD drive cleaning product.
How do you fix a CD drive that won’t read discs?
How do you fix a CD that Cannot be read?
If the optical drive cannot read the files stored on any CD/DVD discs, you need to confirm that the drive is listed in Device Manager. Confirm the drive is listed in Device Manager, and then reinstall the device driver to resolve any error states. Verify that there is no disc loaded in the drive.
Can a scratched CD be repaired?
Fixing a scratched CD is similar to fixing a scratch on your car- you want to polish the scratches out. You can use a variety of different plastic polishes, rubbing compounds, and in some cases even a metal polish or toothpaste.
How do I read an unreadable CD?
Solution 2. Step 1: Prepare a tube of toothpaste, Vaseline or liquid car wax or Scratch Out. Step 2: Cover a thin layer of toothpaste, Vaseline or Scratch Out on the scratched CD/DVD. Step 3: Wipe disc in a radial motion: inside – outside with a clean and soft lint-free cloth.
What removes scratches from CDs?
Apply a small dab of white toothpaste or metal polish to a clean, lint-free (ie fluff-free) cloth and rub very gently along the scratch from the disc’s centre outwards. Cover the full length of the scratch, then repeat twice for good measure.
