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Brightness Controls Stopped Working - dm4

Q: Brightness Controls Stopped Working - dm4

Resolving Problems with the Brightness of the Display. Installing the latest graphics drivers can resolveBrightness issues. Updated video driver automaticly.

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Preferred Solution: Brightness Controls Stopped Working - dm4

I recommend downloading and running DAP. It can help sort out any driver and firmware related issues on your system

It's worked out well for many of us in the past.

You can download it direct from this link http://downloaddap.org. (This link will open the download page of DAP so you can save a copy to your computer.)


The brightness control keys (f2 & f3) on my pavillion dm4 stopped working all of a sudden. I'm operating windows 7 64bit. I've tried reverting to previous system restore points. I've also installed the BIOS, Intel chipset, and graphics drivers. All the other function keys are working properly, just can't change the brightness. Right now it's stuck on the brightest setting.I hope someone can point me in the right direction to solve this issue, I'm getting terrible eye strain from the screen.Thanks

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A:Brightness Controls Stopped Working - dm4

@Rico i found out how to fix it.. trial and error... go to device manager and click on your graphics driver.. and uninstall it... reboot computer... if you have win 7 it should install the updated grappics driver automaticly.. if not go back to device manager.. and go to the new device which isnt installed.. update it.. and restart computer.. then brightness controls will work.. sorry if i rushed through instructions..  reply back if you need more specific onees

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Hi - I have a two T450 and one T460 that has the same issue. The FN brightness keys do not work after resuming from sleep or hibernation on Windows 7. I?m still able to adjust the brightness by using windows + x or by rebooting the computer. I?m using the latest drivers on all three computers.  I did not have this issue on my previous x240s. Is there a fix for this? Maybe a bat script that can be ran on each boot. It is becoming a real issue when traveling between job sites.  Thanks,

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Hello there, I need help please! I can't fix the screen brightness. It appears to be stuck on full brightness which draws my battery life quickly and hurts my eyes during nights. The brightness button in the action center is missing, there is no brightness slide bar in the display setting nor in control panel, and brightness fn buttons in the keyboard are not working as well. When I click on the battery icon, there is a brightness button next to the battery saver button but also not working (not even clickable).I searched online and I tried:- updating/reinstalling/rolling back display drivers- resetting pc (reinstalling windows)- many other little repairs College is starting soon and I really need my battery life and I will be studying on my laptop in late hours so this brightness issue is a big trouble for me    

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Hi everyone,
About a week ago, my laptop's brightness key stopped working.
It's not a hardware problem because if I try changing it from control panel I fail. Brightness icon disappeared into windows 10 home x64 1151 as well as control center.
I tried reinstalling both Intel and Nvidia drivers.
the machine is an Acer E5-571G-50NS upgraded to Windows 10 about a year ago.
Thanks in advance,

A:Display Brightness key stopped working

When you say you 'fail' changing brightness in the control panel do you get an error message, what do you mean?

Is your PC fully up to date with Windows Update?

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Other hotkeys work normally, both brightness up/down keys stopped working (did not update or make changes)

A:brightness hotkey stopped working

Hi,I don't know which processor/graphic is installed in your notebook.You can try downloading, save and install the appropriate graphic driver for your notebook:Intel:http://h20564.www2.hp.com/hpsc/swd/public/detail?sp4ts.oid=7815290&swItemId=ob_176908_1&swEnvOid=419...AMD:http://h20564.www2.hp.com/hpsc/swd/public/detail?sp4ts.oid=7815290&swItemId=ob_177365_1&swEnvOid=419...Restart system.RegardsVisruth

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Hi everyone,
About a week ago, my laptop's brightness key stopped working.
It's not a hardware problem because if I try changing it from control panel I fail. Brightness icon disappeared into windows 10 home x64 1151 as well as control center.
I tried reinstalling both Intel and Nvidia drivers.
the machine is an Acer E5-571G-50NS upgraded to Windows 10 about a year ago.
Thanks in advance,

A:Display Brightness key stopped working (Solved)

When you say you 'fail' changing brightness in the control panel do you get an error message, what do you mean?

Is your PC fully up to date with Windows Update?

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I was able to adjust the brightness of my screen using the f2+f3 button but suddenly they stopped working and am not able to adjust the brightness of screen from any place neither control panel nor any other option tried some methods but they all failed

A:Screen brightness buttons stopped working

Hi, Try the following. Download the Intel HD Graphics installer on the following link and save it to your Downloads folder. http://ftp.hp.com/pub/softpaq/sp68001-68500/sp68117.exe When done, download and reinstall the Chipset driver on the link below. http://ftp.hp.com/pub/softpaq/sp73501-74000/sp73543.exe When the Chipset reinstallation has completed, do not restart as prompted, instead open your Downloads folder, right click the Intel Graphics installer and select 'Run as Administrator' to start the installation. When this has completed, shutdown the notebook. Unplug the AC Adapter and then remove the battery.  Hold down the Power button for 30 seconds.  Re-insert the battery and plug in the AC Adapter. Start the notebook and let Windows fully load for a few minutes before checking. Regards, DP-K 

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Upgraded to windows 10, then my screen brightness stopped working. All drivers are up to date, all display drivers are activated.

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Good morning:

I have a Dell computer with windows XP. The external controls for brightness and contrast on my monitor are maxed out. I remembered from windows 98 that there is a program one can go into to further adjust these settings. Does XP have such a feature? If so how do I go about finding that and getting into this program? I would appreciate any help that someone might give me.

Thanks, larry_373

A:Brightness and contrast controls.

Hi larry373!

Check that you have the lastest driver for your video card.
Also see if there is any software on the internet that may be specific to your monitor.

Depending on the manfacturer of your card, you may be able to access extra video settings as follows;

Right-Click a blank area of the Desktop.
Select 'Properties'
Click 'Settings'
Click 'Advanced'

I believe some video cards also extend the "Display" Control Panel with additional features.


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Hello to everyone. I was just given a CTX Ezbook, 700 series, and was wondering if anyone out there knows what keys to use to adjust the brightness, contrast, etc. I`ve done a google search, and went to the CTX website, but couldn`t find a manual to download. Anyone have any ideas. Thanks for your time.

Mike Peters

A:CTX Ezbook contrast and brightness controls

I've got the manual at home. Or it maybe back at my Sister-in-Laws. She has that notebook. I had to put more memory in it the other day.

It uses a function key on the bottom left that is blue I believe and you should see the brightness and contrast icons on some of the keys on the bottom right.

I will post back to confirm that when I look at the manual.

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i download drivers for my brightness, i click on these on my desk top, nothing happens,

Can any one advise me on this one.

A:Lost brightness controls on my Satellite Pro M30?

Are you running XP, Vista, or 7?

What is the model number of your Satellite Pro? You will see a PSMxxx-xxxxxx number on the Base Sticker.

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Hi All..
A bit of an odd one that i've not seen before!! I have a Satellite Pro L450D-12X here that has a niggling issue with F5/F6 buttons and (FN)1&2 buttons (for volume) that are reversed.. ie up is down and down is up!!
Seems like a firmware issue as this issue exists even before OS is loaded.
I've taken a look at downloads but can't find any bios downloads. Current version is Phoenix 1.30

Any help would be appreciated

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Good Morning,
My department is currently converting to Windows 10. We have several Dell 9020 AIOs in our department, and for the most part, they work well in Windows 10. However, I noticed that the required driver to get the side brightness controls working was never made available under Windows 10. The previous versions for older operating systems don't seem to function, either. I am having to buy screens for some of my users, as they can't handle the screen with full brightness. Can you please explain to me why there isn't an OSD driver for these systems for Windows 10? Is this just an oversight?

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Fn-Home and Fn-End no longer adjust the screen brightness of my laptop.  The home and end keys alone work fine, as do other function keys.  A suggested solution on another thread was to roll back the video driver - I tried this and lost the video driver altogether, and had to reinstall it manually.  (This may be because I recently had to restore the system to a two-year-old image as a result of another problem, which was apparently caused by updating to Windows 10 and then reverting back to Windows 7).  The video driver (Intel(R) HD Graphics 3000) is up to date.  I am running Windows 7 64-bit edition.  Any idea what could be causing this?Thanks!

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To start off, I had malware and adware in a few places, got that taken care of. My friend went through my services and disabled ones that he didn't see necessary. Now I can't control my sound level or brightness level, so my computer is on the darkest screen level. I work a lot on my computer, really need help with this ASAP.

A:Not getting sound control or brightness controls, sony vaio

Hello and welcome to the forums Buck.

I don't think disabling services is a good way to get rid of malware and adware if that's what you mean? If I was you I would do a system restore to before he disabled the services and see if that works.

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Sorry if there are already a few threads for this, but search is not working for me for some reason.

Here's what I need. Pretty simple:

Software that is...

Free (or very, very close to being so)
Allows me to adjust the color saturation, contrast, brightness of an MPEG video and then save the file with newly adjusted settings.

That's it. I don't need a complex piece of software here. That's all I need it for. Yeah, I know how to use Google, but it just keeps leading me in circles. (Mostly to sites for "free" software that actually require paid activation to use.)

Thanks if you can help.

A:Video Editing Software - Contrast & Brightness Controls?

personally i use adobe premiere, not free but brilliant.

When looking for free software google freeware software type i.e. freeware video editing software. Here is a list of freeware video editing software.


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Hi All..
A bit of an odd one that i've not seen before!! I have a Satellite Pro L450D-12X here that has a niggling issue with F5/F6 buttons and (FN)1&2 buttons (for volume) that are reversed.. ie up is down and down is up!!
Seems like a firmware issue as this issue exists even before OS is loaded.
I've taken a look at downloads but can't find any bios downloads. Current version is Phoenix 1.30

Any help would be appreciated

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I have looked long and hard at other peoples' solutions to this problem to no success. I have tried:-installing latest Intel HD 5500 driver from Lenovo site.-installing latest beta driver from Intel-enabllng the Generic PnP Display-Several registry hacks that claimed to work (I reverted back after they failed to do anything) My question is, when will the display driver support brightness settings again, or is there an older version that works that I can download? I can't "roll-back" my display driver, as the current one was the first I used. Using the default Microsoft VGA driver is a non-starter. I need proper resolution. If anyone can help, I would appreciate it. I feel like I have tried every solution on the internet, and perhaps the only solution for me is a different driver, possibly. Or one that doesn't exist yet.

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i have hp notebook 15 ac 119 txbecause of various errors after windows update i put my system on recovery after the recovery again the problems have started coming. recent problem is of brightness. i cannot adjust my brightness at all. F-keys from keyboard have no effect and even it can not be adjusted through control pannel. i checked in device manager regarding the dispaly drivers update. it says i am using the latest versions of display  drivers.please help. 

A:brightness keys not working ; can't adjust brightness at all

Hi, I'd try reinstalling the amd/intel switchable graphics software package on the link below as it mentions a fix related to the f2/f3 keys. http://ftp.hp.com/pub/softpaq/sp74501-75000/sp74717.exe When this has completed, restart the notebook. Regards, DP-K

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Hello All. I'm new to the site, and after having been tasked to fix my girlfriends computer. I'm left scratching my head. I don't know what she or her son did to this machine but everything I have tried has not worked. So any help would be greatly appreciated.

Machine - Dell Inspriron INSP1440

OS - Vista 32-bit SP2

Issues -

Cannot start internet browsers outside of safe mode. Every time I have tried I get an APPCRASH Error.

IE - Internet Explorer has stopped working.

Problem Signature:
Problem Event Name: APPCRASH
Application Name: iexplore.exe
Application Version: 9.0.8112.16421
Application Timestamp: 4d76255d
Fault Module Name: iexplore.exe
Fault Module Version: 9.0.8112.16421
Fault Module Timestamp: 4d76255d
Exception Code: c0000096
Exception Offset: 000026d1
OS Version: 6.0.6002.
Locale ID: 1033
Additional Information 1: fd00
Additional Information 2: ea6f5fe8924aaa756324d57f87834160
Additional Information 3: fd00
Additional Information 4: ea6f5fe8924aaa756324d57f87834160

Firefox - Firefox has Stopped Working

Problem Signature:
Problem Event Name: APPCRASH
Application Name: firefox.exe
Application Version:
Application Timestamp: 4fda6075
Fault Module Name: ... Read more

A:APPCRASH When starting IE and Firefox, DNS Client Has Stopped Working, and Host Process (Rundll32) has stopped working Errors.

Here is the DNS client has stopped working error

DNS Client has stopped working

Problem Signature:
Problem Event Name: APPCRASH
Application Name: svchost.exe_Dnscache
Application Version: 6.0.6001.18000
Application Timestamp: 47918b89
Fault Module Name: ntdll.dll
Fault Module Version: 6.0.6002.18327
Fault Module Timestamp: 4cb73436
Exception Code: c0000005
Exception Offset: 000250fb
OS Version: 6.0.6002.
Locale ID: 1033
Additional Information 1: 7373
Additional Information 2: 38d9ec761cde35dc7ff9a3014cbc1e9a
Additional Information 3: 007a
Additional Information 4: f2126b35ab5de9a1c961e83e18b5e24b

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Initially when i bought the notebook had windows 7 64 bit where brightness hotkey worked but ever since i upgraded to windows 10 the brightness hotkey which is fn + f6 and fn +f5 stopped working.Help... Any drivers??

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Problem signature:
Problem Event Name: APPCRASH
Application Name: setup.exe_Microsoft? Windows? Operating System
Application Version: 6.2.9200.16384
Application Timestamp: 5010a298
Fault Module Name: setup.exe
Fault Module Version: 6.2.9200.16384
Fault Module Timestamp: 5010a298
Exception Code: c0000096
Exception Offset: 000020f4
OS Version: 6.1.7600.
Locale ID: 1033
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

Read our privacy statement online:
Windows 7 Privacy Statement - Microsoft Windows

If the online privacy statement is not available, please read our privacy statement offline:

A:Windows installer has stopped working or setup.exe has stopped working


Lets start here:

1. Download and save this tool to your desktop:

2. Run the tool, and then click 'Copy' - ignore any errors if they appear

3. Use CTRL+V to paste the unedited results of the validation tool here in your next reply


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this morning i got those 2 errors pop up, and i cannot get into system info, cannot do a system restore
running windows 7

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The dispaly brightness buttons on my Elitebook 1040 G2 (F9, F10) stopped working, perhaps with an update but not sure.  I have installed the latest Windows updates and graphics driver, run scannow, DISM, to no avail.  Anybody have a suggestion? OK, I solved it.  I installed the latest HotKey support drivers, which I saw suggested in a recent thread for a different model, and that fixed the issue.

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Okay I have just gotten vista on a new computer. I am not sure if this is the right forum for this post. If not i am sorry.. but I am hving problems with sound control with MSN. When I do a video call or voice chat I am not able to adjust the volumes on mic etc. ( in the msn window area ). Also If I am listening to music or playing a game and any other music or sounds are activated by game or what have u I hear both .. is there some way to have it set so If i am listening to music the other sounds are automatically blocked off. My sound card is the Realtek High definition Audio if you need to know more than that please tell me how to do it.


A:Controls in MSN not working

Ok maybe its not stated right.. In MSN i ran the audio video setup wizard... my video works and so does my mic.. but I cannot control the volume in the MSN window under or next to where my video is showing or the mic thing is showing.. Also the second problem I want only one music thing being able to run at once.. right now if I am playing a game and playing mp3's I can hear both . I want it that if one is being used u cant hear the other...

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I get these two error messages every time I start my computer, is there any help? I have an Acer 4810T

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I have gone through the steps on the tutorial to set up parental controls (set to medium for internet), but it's not blocking anything. Also it doesn't list websites visited. Is there some trick to this? (I'm using internet explorer.)

A:parental controls not working

The only thing I can think of is make sure you click on, enforce settings, Other than that it should work. It will list websites visited in the logs once it's working properly.

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Hi people. I recently installed W7 SP1 and am having trouble viewing/interacting with many websites. e.g. my banking website I use, when I left click on a icon that should fold down menu options it does nothing. On other websites /forums the 'post' button doesn't. On some I will copy some text and it wont paste etc... im thinking my active x controls are to blame as when I first visited many websites I declined the use of them on some?
After installing W7 I have downloaded/installed all MS updates, and the latest antiviris/malware, adobe reader, flash-player and java.
Any help is greatly appreciated.

A:Active X controls not working?

Have you tried to view the websites in which you have issues with "Compatibility Mode"?

IE instructions:
Go to Website in question.
Press Alt to bring up menu.
Go to Tools > Compatibility View Settings > press "Add" and close the dialog box.
Try to use the website again.

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I have recently built an i5 computer with a P55 Gigabyte MOBO and Win7 64 bit OS.

I have saved the power management settings in my BIOS to where I can hit the power button on my keyboard to power on my computer, and also to where I can double-click my mouse to power on my computer.

My mouse and keyboard are wireless Logitech unifying devices.

And after all of this, the double-click power on does not work, and neither does the keyboard button work. I even changed the keyboard settings to where I type in a password to power on the desktop, but that does not work either.

Does anyone kno how I can fix this problem?

Thanks in advance!

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i am using windows 7 home premium 64 bit, i have the latest version of flash player, and when i access a youtube video on youtube.com, i can see the video playing, but i cant see and cant access the the controls like pause and time skip.... How do i fix this?, this is also happening in firefox and chrome...

A:youtube video controls not working

The normal flash player install is for the 32-bit browser which is also installed on 64-bit Windows 7. (There may also be a 64-bit flash player.) Are you sure the correct FP version was installed in the version of IE you are using (64 or 32)?

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Hey, Fellas, I'm back.
Lately when I've tried looking at different folders and files on my hard drives I keep getting "Windows Explorer has stopped working and will restart." It's driving me nuts, I can barely do anything.
Also, same thing with Internet Explorer...I'm getting real sick of Vista's shoddiness..

A:Windows Explorer Stopped Working, Internet Explorer Stopped Working, what DOES work?

Have a look at the events log and make a virus scan too.

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I recently tried changing my default audio back to my installed soundcard, I have used this soundcard on many occasions without any problems, when reconnecting my webcam it made itself the default device. After disabling the audio on the webcam, and disabling the audio on the internal Realtek soundcard and enabling my soundblaster soundcard, I saved changed and restarted my computer. When I went to the sounds and audio devices in control panel, it shows "no audio device" under volume, and under audio its showing "no playback devices" and "no redording devices" "no midi playback devices" and the dropdown arrow is greyed out so I can't set up my default device. I went to hardware, and it shows both the internal and external soundcards there and that they are both working properly. The media control devices were showing a yellow exclamation mark beside them before, but after uninstalling and reinstalling everything in the sounds aand audio devices hardware tab it was corrected. I have tried going to Device manager, and uninstalling the system speakers and then clicking on "check for hardware changes" and having them be reinstalled, but it has not corrected the issue. I have no installation disc to reinstall windows xp in repair mode..... Does anyone have any idea how I can fix this problem? Also my sound recorder is also missing. I am running Windows XP Home Edition Version 2002.

A:Windows xp home missing internal speaker controls and volume controls

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I have an existing database I use for organizing information about our employees. My main form is the employee form, which I then have split up into 6 pages using the tab controls. For the most part, it works fine.

The last page/tab holds a simple subform with only four fields.
- Discipline (about 12 possible: using a combo box)
- subdiscipline (filters only those related to the discipline, also using a combo box)
- Date started the subdiscipline
- Date ended the subdiscpline

The discipline combo box works fine. The problem is with the subdiscpline combo box. It is pulling data from a simple 2-field query (discipline & subdiscipline). It is suppose to use the discipline combo box selection as the discipline criteria in the query, filtering in only those I need, but can't get it to work.
I actually had it set up in a different database and it worked fine, but when I imported it in as a subform for this one, I started to have problems.

If I reference the control in the subform as
I get only an empty combo box for my subdiscipline selections.

If I reference the control same control as
I get an "Enter Parameter Value" input box as if it cannot find my reference.

I know I deserve a slap on the wrist for it, but I did use spaces in some of these names (employee form; authorized disciplines). I don't know if that's what the problem is or not.... Read more

A:Referencing controls in Access subform not working??

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Not sure if this is the correct place to post my thread, but here it is:

There's a problem where, the volume buttons to turn the volume up and down, on my Keyboard and Headset, stopped working. This happened a while ago, but now it's started to bother me since I simply want to adjust the volume when I'm ingame, and I don't want to click the volume button on the taskbar, then adjust it, blah!

If anyone knows how to fix this, thanks, and I doubt it's a problem with the keyboard and headset itself, since both are affected.

I'm using a Logitech G15 Keyboard, and a wireless Creative HS-1200 headset.

A:Keyboard/Headset volume controls not working?

Check your manual. Do you have a key or set of key strokes that deactivates the speakers?

Check drivers.

Another problem can be with the headphone jack itself

The headphone input jack is stuck, there is a small switch inside the jack which shuts off the speakers when headphones are plugged in. When the headphones are pulled out, the speakers turn on again. Determine which jack you are using and use the other.

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I'm using routed events in user control within a surface control(ScatterView), but mouse events not getting raised.
It's working fine with any other WPF controls but not with ScatterView control.
Please let me know if I'm missing something.
Nitin Rathore

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Hello everyone. After much googling and my own attempts, I'm still having difficulties with my mic. It works some of the time, and when it does it's super quiet although I have all the volume controls all the way up.

I own an Asus Eee Pc 1001p. It has Windows 7 Starter, Intel 82801 PCI Bridge 2448, and also the lovely Realtek HD software crap that seems awful from what I've read. The mic is built into the laptop.

I've turned up the volume, checked to make sure boost was on in just about every place: windows controls, skype controls, and realtek controls. The mic will work sometimes, but like I said it's pretty quiet when it does. And sometimes it doesn't even work at all.

Thank you for reading

A:Mic not working after checking all kinds of volume controls

Do you mean when you speak into the mike the sound that comes out is quiet, this sounds to me like it could be a sound card problem have a look in the device manager to see if there are problems devices.

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Hi I was hoping someone could help out a bit with this problem I am having with my brand new desktop..

vista 64bit home premium - service pack 2 - internet explorer 8

I have set up myself as the administrator in user account and then I set up my 7 year old son as a standard user.

...every thing works as it should if loggged in as either user...

The problem begins as soon as I turn on the "Parental Control" in the "user contols" box in vista for my son.
I'm still logged in as myself (administrator) - open up internet explorer and it says
" internet explorer cannot display the web page " ....internet explorer refuses to work at all.
The network diagram shows it is still connected to the internet...
Restart and it still will not work
Log in as any user it still will not work
Delete my sons user account and it still will not work
The only way to make it work again is to use system restore and to go back to before I turned on "Parental Control"
I have done this several times now in trying to find what was stopping internet explorer...

It seems as soon as "Parental Control" is turned on it messers up internet explorer for good !!

I would like to use the internet restrictions for his account but this is giving me a big pain in the A**

A:parental controls stops internet working for all !!

Try going into IE>tools>internet options>connections>lan options>uncheck automatically detect settings


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My Dell Inspiron 15 5558's keyboard backlight will not stay on. I just installed the Dell Feature Enhancement Pack 2.2.1, and no help.

When I go into the Control Panel, Hardware and Sound, "Dell Keyboard Backlight Settings", the third tab on it is for "Backlight," but it is greyed out and I cannot use it.

I have just spent way too much time today trying to chase this down on Google and in Dell forums, but I remain stuck.

 Any help would be greatly appreciated,

Thank you,


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When I go to open HP MediaSmart, on the drop down menu I click on Video. It opens briefly and about 5 seconds I get the message "HP Media Video has stopped working. A problem stopped the prgram to stop working correctly. Windows will notify me if a solution is available.  I ran the sfc.exe (system file checker tool from microsoft as administrator)  and it passed with result of "windows resource protection did not find any integrity violations".I can play a DVD, i can open my photos but I can't view my videos or load any new ones using HP MediaSmart.I have restarted the computer several times with no help.Any suggestions?

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My son's Ideapad 110S (purhased Aug 2017) has stopped working, won't charge, but charger does work on his brothers Ideapad 110S. It is completely dead. Does battery need replacing or something else? Thank you for any and all help!

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Dear Friends, Hope all is well.  I wrote "directly to HP Tech/Support and due to the warranty it defaults to here.A couple of matters.One I need a replacement Key and hinges for the *insert- Scroll key*The other issue(s) are that none of the finger sensitive swipe controls work to control speaker volumes or <<RW - Play >|| -FF >> and not last and not least the WiFi  indicator does not glow. I have always liked and used HP so I hope you can help me with these matters even though the computer is quite old and out of warranty. Sincerely, Raphael

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my laptop's brightness is not working and why i can not download apps frome store.

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i have installed windows 7 ultimate in my pc , the thing is brighness keys are not working and there is no option of adjusting brightness ,all the possbilities i tried  please could u help me to solve this 

A:brightness is not working

Hi: Did you install the chipset and graphics drivers?  That would be the only suggestion I can offer...Install and restart the PC. This package contains the Intel Chipset Installation Utility and Driver for supported notebook models and operating systems. This utility enables the operating system to show the correct name for the installed Intel hardware in the Microsoft Windows Device Manager. http://ftp.hp.com/pub/softpaq/sp52501-53000/sp52791.exe This package provides the driver that enables the Intel High-Definition (HD) Graphics in supported notebook models that are running a supported operating system. If high-definition multimedia interface (HDMI) video output is supported, this package also installs the HDMI Audio Driver. http://ftp.hp.com/pub/softpaq/sp61001-61500/sp61152.exe  

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For some strange reason, the brightness doesn't appear to be increasing or decreasing anymore. Whether I try it from the FN key function, or the power options and even under settings on the right swipe menu, the brightness on the monitor is not changing. I trying rebooting, but that didn't help either. I'm runing an acer aspire ES1-512-C1W0 with Windows 8.1 64bit 4GB RAM. Any ideas what's wrong?

A:Brightness not working

Well, nevermind. Problem solved I guess. I did a restart instead of a shutdown, and it looks like it started working again. Not sure why it wasn't before.

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Suddenly from yesterday brightness controllers are not working. i dont know what happen? suugest the best solution

A:Brightness is not working

Hi @Kuladeep127,I hope you enjoy your visit to the HP Support Forums. I understand you are having an issue with the brightness. I will be glad to help you. Please post the full product number of your computer. See the following, if you need help with that information.How Do I Find My Model Number or Product Number? Please get back to me, so I can help you.

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