Question about Gateway MX6421 Notebook

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HELP! My laptop is REALLY slow...

After I removed the Upper Filters and Lower Filters registry values as my Cd/DVD player was not working on my Gateway Notebook MX6421. Now my computer freezes or it is REALLY slow...HELP ME PLEASE!!!

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  • Randall Stoots May 11, 2010

    exactly what are you doing ? it sounds like there are many viruses on that computer.... i recommend you do a complete re boot of the hard drive and do a destructive re format of the harddrive and then re install everything .....

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Hi,
is the cd/dvd working now after removing upper and lower filters, if it is that is good,
when does your computer freeze can you associate it with some activity that you are doing on it,
does it give any error when it freezes any blue screen error

when you deleted upper and lower filters did the notebook started to freeze right after that or it worked fine for some time,

try restarting your system in safe mode and see if it freezes there
to go into safe mode
restart your system> at gateway logo > start tapping F8 > in this menu select safe mode and try using it in safe mode

tell me what happens so that i can help you further

Posted on Feb 18, 2009

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Posted on Jan 02, 2017

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1 Answer

My dvd player is not recognized by my computer anymore.


Click start control panel administration tools computer management device manager scroll down cd-dvd rom drives you might see a yellow question /exclamation mark ? ! or a red X right click to update driver

you might have to physically unplug the leads for this cd/dvd restart your computer then plug them back this should activate the found new hardware wizard

if this does not fix the problem it might be a registry problem if you cant see your disk drive in windows explorer


Close all open programs

Click on Start, Run, and type regedit and press Enter
Click on the plus signs (+) next to the following folders

HKEY_LOCAL_MACHINE

SYSTEM

CurrentControlSet

Control

Class

{4D36E965-E325-11CE-BFC1-08002BE10318}

This folder is the DVD/CD-ROM Drive Class Description in the registry. Look for any of the following names in the right hand column.

Upper Filters

Lower Filters

Upper Filters.bak

Lower Filters.bak

If any of the above keys shown in step 4 are listed, right-click on them and choose Delete

After deleting the keys, close the registry editor
Reboot your computer

Open My Computer and check to see if your CD or DVD drives have returned. You may also want to open Device Manager and verify that the yellow exclamation and error code on the CD or DVD drive is gone.


hope it helps

Jun 04, 2012 | Pioneer Bd-rom Dvd±rw Laptop Drive...

1 Answer

Iv tryed most things. my acer aspire 7520 laptop has lost the dvd/cd player from the device manager so it will not work it is connected and it starts up.but no picture or sound.


You need to reset the hi and lo filters for the device, as this is caused by a registry error or corruption
Close all open programs

Click on Start

Click Run

Type REGEDIT and press Enter

Vista doesn't come with the run command enabled so just type REGEDIT in the search bar above Start..

Click on the plus signs (+) next to the following folders to open them.

HKEY_LOCAL_MACHINE

SYSTEM

CurrentControlSet

Control

Class

{4D36E965-E325-11CE-BFC1-08002BE10318}
(looks like same file name for XP and Vista?)

This folder is the DVD/CD-ROM Drive Class Description in the registry. Look for any of the following names in the right hand column.

Upper Filters
Lower Filters
Upper Filters.bak
Lower Filters.bak

Jul 18, 2011 | Acer Aspire 7520-5757 Notebook

1 Answer

I cannot detect my DVD-Super Multi DL hardware


When did the problem start? if the DVD drive is not detected on the Computer but you have power on it. it might be a software related issue
You can try to remove the Upper and Lower Filters this normally fix Missing CD-Rom/DVD ROM issue:
*NOTE: MESSING UP THE REGISTRY MIGHT MESS UP YOUR SYSTEM. DO THIS AT YOUR OWN RISK - or you can see some links Below for other T/S Steps.
Clear the upper and lower registry filters

  1. Click the following Microsoft Fix it Solution to clean the registry filters automatically: c01733077.jpg If you cannot use the Microsoft Fix it Solution, continue using these steps to clear the upper and lower registry filters manually.
  2. Unplug all non-essential external plug and play devices, especially cameras.
  3. Click Start c00817930.gif , and type "regedit " into the Start Search field. The registry editor window appears.
  4. Select Computer in the main window.
  5. Click File , Export , type a filename that is easy for you to remember, and click Save . A copy of the registry has saved for back-up purposes to the Documents folder. If problems occur after using these steps, browse to the file and double-click it to restore the registry.
  6. Click the plus sign (+ ) next to the following items in the list:
    • HKEY_LOCAL_MACHINE
    • SYSTEM
    • CurrentControlSet
    • Control
    • Class
  7. Select 4D36E965-E325-11CE-BFC1-08002BE10318 . Make sure you have selected this exact key name.
  8. Select the LowerFilters value and press the Delete key. Confirm the deletion by clicking Yes . Figure 10: Registry Editor: LowerFilters key
  9. If an UpperFilters value is also listed, select UpperFilters in the right window and press the Delete key. Confirm the deletion by clicking Yes .
  10. Delete all other UpperFilter and LowerFilter values within the 4D36E965-E325-11CE-BFC1-08002BE10318 key if they exist.
  11. Close the registry editor and restart the computer. The disc drive should now be recognized by Windows. You may need to uninstall your disc recording software, restart the computer, reinstall the CD/DVD writing software, and then restart the computer again if the software no longer recognizes the drive (see next step).
or try this MISSING DVD ROM FIX

May 11, 2011 | Acer Aspire AS55365142 AMD Athlon X2...

2 Answers

Hi, i have an asus laptop, the cd player wont play anything. its spinning and sounds as though its about to load in but nothing comes up not even an error!! itunes, realplayer or windows wont pull it...


make sure that the dvd burner is getting enough power test all leads that are attached to the dvd burner including electical extensions and make sure they have a secure connection or just replace them there might be bad/faulty or
your drivers may have been corrupted or you might have a virus run your antivrus program
you might have to physically unplug the leads for this cd/dvd burner then plug them back in or
you might have to uninstall then reinstall your DVD/CD or uninstall the driver then reinstall for this device
control panel admistrive tools,computer management,device manager scroll down cd dvd rom drives right click you can you can update driver,roll back driver,or
select properties general troubleshoot, select driver click to reinstall drivers click update driver or uninstall then reinstall
hope this helps
if this does not fix the problem it might be a registry problem

Close all open programs

Click on Start, Run, and type regedit and press Enter
Click on the plus signs (+) next to the following folders

HKEY_LOCAL_MACHINE

SYSTEM

CurrentControlSet

Control

Class

{4D36E965-E325-11CE-BFC1-08002BE10318}

This folder is the DVD/CD-ROM Drive Class Description in the registry. Look for any of the following names in the right hand column.

Upper Filters

Lower Filters

Upper Filters.bak

Lower Filters.bak

If any of the above keys shown in step 4 are listed, right-click on them and choose Delete

After deleting the keys, close the registry editor
Reboot your computer

Open My Computer and check to see if your CD or DVD drives have returned. You may also want to open Device Manager and verify that the yellow exclamation and error code on the CD or DVD drive is gone.




hope this helps

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1 Answer

HP Compaq DC7900 CD/DVD problem - computer does not read them


I guess the CD/DVD drive is not detected in my computer
Then you can follow the following steps:
CAUSE-It may happen due to some corrupted registry keys in the computer. We can follow the following steps to delete the upper and the lower filters.
RESOLUTION/ WORKAROUND-
1. Locate the following key in the registry: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet
2. In some cases, there may be multiple ControlSets. You may see something similar to the following HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002
Or
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002
3. Select either CurrentControl Set or the lowest numbered ControlSet, for example, in the second list above, ControlSet001, and do the following.
4. Locate the following key and highlight it in the left window of the Registry Editor. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
5. In the right window, you should see something similar to the list below. There may be some variation in the listed drivers for the upper and lower filters. For example, the upper filters may list a driver other that PWD_2K. You may also see only upper or only lower filters:
LowerFilters = CDRALW2K
UpperFilters = PWD_2K
6. Delete the upper and/or lower filters.
7. Exit the Registry Editor and restart the system.
NOTE: If the computer still does not recognize the drives, go back into the registry and repeat the above steps for editing the registry for each of the ControlSets listed on the system.
Hope it works for u
All The Best !!!!

May 09, 2010 | HP Compaq DC7900 PC Desktop

1 Answer

Hldtst dvdram gsat20n drivers missed, how to download


You do not need to download the driver. You just need to delete the filters in the registry, Here's how:
Click on start>Run>regedit to open the registry editor. Click ctrl+F to open the search window and try to search for 4D36E965-E325-11CE-BFC1-08002BE10318. if you cannot search it. click on HKEY localmachine>system>Current control set>control>class> then look for the value. the class should say CD/DVD rom drives. Delete the upper and lower filters. then restart your computer. That should get you going.

Solution 2:refer to this link
http://www.computerhilfen.com/tech/tip-dvd-player-has-disappeared.html

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2 Answers

My cd/dvd driver e is not listed in my lap top.


Are you able to see this in BIOS. Make sure it is detecting in system bios and its is not disabled over there

Oct 13, 2009 | Acer Aspire 5610-4648 Notebook

1 Answer

Laptop


I recently lost my CD/DVD drive when I (correctly) uninstalled a Roxio application from my Toshiba laptop. After a week of frustration, I finally found the fix. My CD/DVD drive is back!

Go to the Windows START menu.
Click on RUN and enter: regedit

FOLLOW THIS TREE:
Registry Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class

In the CLASS folder, look for:
Key Name: {4D36E965-E325-11CE-BFC1-08002BE10318}


Value Data: [Delete All Value Data from UpperFilters and LowerFilters] You will see the upper and lower filters folders once you get to the end of the tree… *\*\*\control\class
If a backup folder for either the upper or lower filter folders shows up, clear all the data from these folders as well.

Note: Do not delete the Key or the Multi-String Values. Delete only the data values.
Exit Registry and Reboot


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1 Answer

How to delet value data from upper lower filters of the key


The easiest way to remove the filters is to use the tool that Microsoft supplies at this link. http://support.microsoft.com/kb/314060

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2 Answers

Dvd rom


Hi,

You can try the steps below to fix the issue.

Edit the registry:-

1. Click Start, and click Run.
2. Type regedit in the Open box, and click OK.
3. In Registry Editor, click the plus (+) sign next to each folder name to expand the following registry path:
4. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class
5. Under Class, click {4D36E965-E325-11CE-BFC1-08002BE10318}.
6. In the right pane, right-click Upper Filters, and click Delete.
7. Click yes when prompted to delete the registry value.
8. In the right pane, right-click Lower Filters, and click Delete.
9. Click yes again.
10.Close the window and restart the computer


Please do not forget to rate the solution.

Regards,
Musheer.

Nov 10, 2007 | Sony (DWQ58A) DVD RW Dual Layer Burner

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