HP Pavilion Dm4 Display :: Brightness Controls Stopped Working
Mar 3, 2011
The brightness control keys (f2 & f3) on my pavilion 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'm getting terrible eye strain from the screen.
I am running Win 8.1 x64 (up-to-date) on HP Pavilion 1322TX laptop. There are Intel HD Graphics 3000 and ATM Radeon HD 7450M two graphic cards as the device manager window. Recently I am getting blue screens and later message appear saying the ATM driver stopped working. I found many problems with this driver in the past as well. When I check the relevent page for my laptop model, there is no update since 2012..
Can I update these two drivers seperately by getting updates from Intel and AMD sites?
Is there any update for catalyst control system (CCC) ?
When I try to update through the CCC or HP Support Assist, it is always no updates..
I've recently installed Windows 7 x64 build 7229 on my Vaio and I've managed to get everything working except for the screen brightness controls.
So far I've installed the x64 version of SFEP driver along with Vista versions of Sony utilities dll, sony shared library, sony event service and sony settings utility.
Installing the xp versions of those programs made the brightness control work fine, but on Windows 7, the screen brightness control pops up on the screen but the brightness doesn't change. Also I've read that I should be able to control the brightness in the Windows mobility manager, but there is nothing there about screen brightness.
The screen running at full brightness is hurting my eyes.
I just bought my laptop. Installed Windows 7 clean 64bit on it.This is the laptop's product page. I can't change the brightness of my laptop's screen. I can't do via the [Fn+Up/Down] combo nor by the Windows Power Options interface.
I tried all combos of installing and uninstalling the Lenovo Energy Management. (I got v184.108.40.206 on my laptop).I tried un and installing Intel HD 4000 (Driver v220.127.116.1196). I get Lenovo ACPIVPC v18.104.22.168 (12/15/2011) when installing the energy management thing.I've tried to install as least as possible other Lenovo crapware.
I have a thinkpad l520 5016-c74 running windows 7 64bit and kubuntu 13.04.
When i try to adlust the brightness in kubuntu, the jotkeys work just fine.
On the other hand, in windows, i can adjust the brightness from the windows menu, but every time i hit Fn+home or delete (this is the hotkey on my machine) the brightness, regardless of where it is set, drops to 7 (from a scale of 1-15), and cannot be readjusted, If i hit again Fn+Home or Delete, it does this flash, like it's trying to change the brightness, but something holds it in 7. I can always change it from the windows menu. But again the same thing, hotkey and back to 7.
Since my laptop (dv6 pavilion 7090el) had to be formatted to another copy of windows 7 (64bit), i can't manage to make hotkeys for brightness(f2-f3)/volume(f9-f10).
I tried to install/uninstall/install HP quick launch software (with all the system restarting combos possible) and the software doesn't really seem to be installed, since it only appears in the Control panel but not anywhere else.
The BIOS "action key" option in System configuration is already "enabled" ....
I cannot adjust the brightness of my display using the Fn keys or the Control Panel... I have already had to replace my battery once... I need to be able to adjust the brightness in order save my battery life!
I changed my operating system from WINDOWS 7 ULTIMATE 32 BIT TO WINDOWS 7 ULTIMATE 64 BIT,and the problem is after changing OS my laptop is not displaying Brightness bar. Brightness is increasing and decreasing but it is not showing bright bar.
Any driver i have to install ? if required then driver download link.
I recently replaced the inverter in my Dell Xps M1530 laptop. I bought the inverter off ebay, and the listing said it was compatible for my laptop. My problem is,
that since I replaced the inverter (screen looks great by the way), the brightness controls no longer do anything. The laptop is on constant highest brightness. If I use the Fn Up and Down arrows,
the brightness bar comes up on the bottom right of the screen and it actually moves left and right in line with what I am telling it to do, but the screen brightness doesn't change! I have tried going in to the power settings and display settings
I upgraded from Vista to Windows 7 on my SZ5. Was surprised at how much works out of the box (fingerprint sensor, drivers etc) but the one glaring bug I found is that when I close the lid and the monitor shuts off, when I reopen it the brightness controls (FN+F5 and FN+F6) no longer work.
I also notice that the brightness controls in Windows' power options Control Panel disappears.
I need to restart my computer to resolve this (similar problems by other users: Sony Vaio SZ1XP - Windows 7 RC ). Does anyone have a solution? Thanks!
I just tonight noticed that the F5/F6 keys do not work after the machine wakes from sleep. It works fine after I reboot. But after sleep the OSD will show up when I hit F5 or F6. The display gauge will move to the left TWO positions when I hit F5 but only once. If I hit F5 again, nothing happens. If I hit F6 it moves to the right TWO positions again only one time. In both cases there is NO change to brightness.
I tried to log off and back on to see if it has any effect. It did not. I'll reboot now and the hibernate to see if the problem recurs coming out of hibernation.
I am running Win7 ultimate 32 bit.
UPDATE: Well this is strange. I rebooted and the F5/F6 keys worked fine of course. I hibernated and then came back out and they still worked fine. I logged off and back on and again they were fine. So this seems to be ONLY a sleep issue.
If any of you have an FZ model running Win7 32 bit. Can you try this and report your findings?
Ive recently had my laptop repaired after it got wet and the replaced the screen and everything,but since i have had it back the FN and brightness buttons do not work, nor does the brightness controls work via BIOS settings, also when the laptop goes into sleep mode or the lid is closed, the screen stays on bright white instead of going off.
just can't seem to get my Brightness controls to work in speed mode in windows 7.
I've tried 169.09, 180.70 and the most recent forceware drivers.
I've installed the registry file that was recommended in one thread. I've tried all kinds of orders. Still, nothing.
I've currently installed (in this order) SPEF SonyPI Shared Library SonyUtils DLL Event Service The Registry Patch NVIDIA Drivers
They work fine in STAMINA, but not in SPEED. I can't even access them through Windows Mobility Center or Power Options. I can change them a very small amount though the NVIDIA control panel through the "adjust color settings" tab. Otherwise, theres no mobility options in the NVIDIA panel.
My brightness function keys are not working. Other function keys like music player, mute etc are working fine in my windows 7 os. My Model no is 15-r006TU. I have installed all display drivers and checked action key settings in my BIOS settings. Nothing works.
My webcam stopped working all of a sudden. I have HP ENVY dv6-7258nr Notebook PC with Windows 8. The camera app says "Connect a camera." and the device manager does not show "Imaging Devices". Instead there is "Other Devices" which has a subcategory of "Unknown Devices" with a yellow mark.
I have updated, reinstalled cyberlink youcam drivers, tried system restore (which does not complete saying i have an anti virus open when i don't have any antivirus on my notebook) but nothing works. Scanning for hardware does not bring up any thing. I have also followed the instructions given on hp site and opened the youcam software but it does not detect the camera.
Laptop is only 9 months old. I did all of the updates and then my touchscreen stopped working - that was 4 days ago. Today I did a system restore to the point before the 1st critical update (9/24/14). It still does not work. Did it corrupt my driver? And if so, what is the name of the driver? How can I restore the touch screen...
Product: EOLO6UA#ABA System: x64 Processor: AMD A10-5745M APU with Radeon (tm) HD Graphics SM BIOS Version: 2.7 Microsoft Windows 8
I used the upgrade kit from Acer to do a clean install of Windows 7 to my Timeline 1410. Everything works great and I love this laptop... except that the brightness controls (Fn+Left/Right Arrow) do not work. It's locked at highest brightness.
I am at my wit's end trying to figure this out.
I have installed all the Win 7 drivers from Acer's site, particularly
When I first boot it up, the brightness controls work fine during the BIOS steps. But once Windows takes over, the controls no longer function. In the Windows Mobility Center, there is no brightness control panel. [FWIW, my Dell, which does have functional brightness control, doesn't show one either.] All other Fn-combinations, like volume control, work fine.
Product: HP Pavilion dv7-6015tx Entertainment Notebook PC OS: Windows 7 32-bit Status: Clean installed Windows 7 Ultimate 32-bit from Windows 7 Home Premium 64-bit
I have been having several instances where the computer would seem to 'lag' then after some flickering rendering on my monitor, Windows would give the error: "Display driver stopped responding and has recovered."
There are still effects after this message is displayed. When dragging windows, scrolling up and down etc. graphics continue to flicker.
This is not while hardcore gaming, the GPU was not working in high temperatures. Interestingly, I do not have this problem when I am in the midst of hardcore gaming. The CPU was not under heavy load, the CPU was not working in high temperatures either. I checked the temperature with thermal monitoring (HWiNFO32).
I have plenty of resources, 1223MB of RAM to spare. I also have plenty of HDD space too. I have installed the latest graphic driver for my product: AMD High-Definition Graphics Driver, but the problem persists.
I have a HP pavilion G6 model number C0Y35EA#ABU. I had an automatic update for Windows 8 and my keyboard stopped working immediately after.I have checked device manager and it says there is no keyboard and gives a code of C24.If I go into setup before Windows the keyboard works fine so I know it's not a hardware issue.
I have an HP Pavilion dm4-1150ea running Windows 7 64bit.
I bought a bluetooth audio receiver and it paired with the laptop and installed a driver. I was able to stream audio to the receiver but when I closed the laptop and later opened it, it stopped working.
I looked in device manager and the bloetooth radios were no longer there and there were no bluetooth devices under Network Adapters. They had been there previously.
I rebooted a few times and it still didn't work. I got it to work once and it coincided with putting the power lead in. However, it didn't work for long.
HP Wireless Assistant says that Bluetooth is disabled in Device Manager.
I tried downloading the latest bluetooth driver from the HP site but it won't install because bluetooth isn't running.
At some point I got a message saying that a USB device had failed. I can see a warning icon on an "Unknown Device" in the USB Controllers section of Device Manager.
I tried to do a system restore but that failed because it couldn't get access to a file.
My fingerprint reader stopped working. I can open the Simple Pass ID program but when I click on fingerprints, it indicates "verifying identity" with an hourglass on top of the fingerprint icon and no matter how long I wait, that's all that happens.