Screen brightness when plugged dims or decreases and increases when on battery

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  To be honest, I've ever seen something like that
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  I hope this helps.

  Good luck!

  Lorien - MCSA/MCSE/network + / has + - if this post solves your problem, please click the 'Mark as answer' or 'Useful' button at the top of this message. Marking a post as answer, or relatively useful, you help others find the answer more quickly.

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  Hello:

  W8.1 comes with a power of Adaptive brightness setting in the section of the control panel power options.

  If you have not disabled this setting, see turn off solved the problem.

  Please see this link for where is this setting.

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• !!! BEWARE OF A SCREEN BLUE (WHEN YOU START YOUR SYSTEM) WITH A LONG QUESTION. WE HAVE ONLY 10 SECONDS TO RESPOND AND REACT TO THE! Somebody has hacked my system / do I have a virus?

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  Bruce.

  Since we have not heard from you lately, I will go ahead and tell you how to fix your problem disabled Task Manager (and probably a few other things):

  Basically, when you see these errors, the usual advice is something in the sense of "something has been disabled in the group policy...". ", and it is probably true that something has been disabled, but you know what something is and what it takes to do about it.

  If you are using XP Home Edition, you will get away with advice to use the Group Policy Editor because there is no Group Policy Editor in XP Home and that advice really doesn't tell you where to look in group policy, even if you run the Group Policy Editor (unless it's really good advice).

  Basically, you need a complete solution that works for all versions of XP and requires no hunting around in the Group Policy Editor or registry to find where things are that may have been disabled.

  Unless you have disabled these things on purpose, chances are good that your system has a malware infection.  The malware knows what tools you use to try to find and remove (like Task Manager), the malware disables the things you tend to use and prevents them from running if you can't find the malware and remove it.

  If your system has this kind of affliction, all malicious software tools you currently use or have used failed to protect your system so that you can expand your horizons malware detection and prevention to prevent these kinds of afflictions in the first place.

  The malware will be happy you trick into thinking that you need to so something drastic to fix your system - as a facility repair, system restore point or a total reinstallation of XP.  This is what it would be like you, but these measures are not necessary.

  You must solve the immediate problem of the tools does not, then scan your system for malware when you are finished.

  No matter what kind of malware you've used analytical tools, they are unlikely to solve this problem, because they cannot tell if the changes made to your system have been on purpose (you or an administrator who makes them) or some malware changed them, so the analysis tools will let these things alone (it's usually a good thing).

  If your system is afflicted in this way, there are probably other things that also do not work - like the registry editor, System Restore and the command prompt, so fix them all at once even if you have not discovered they are broken again.

  These commands from registry removes the registry entries that are stop opening programs.  Although the registry entries do not exist, these commands are safe to run and will work for all versions of XP.

  Before making any changes to your registry, back up the registry with this free and popular tool:

  http://www.SnapFiles.com/get/ERUNT.html

  You can also manually create a system restore point before you make these adjustments.

  Open Notepad (and only Notepad) to create a new text file:

  Click Start, run and enter in the box:

  notebook

  Click OK to open a new Notepad file.

  Copy and paste the following lines in BOLD text into the new Notepad file:

  Windows Registry Editor Version 5.00

  [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]
  "DisableTaskMgr" = -.
  [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]
  "DisableRegistryTools" = -.
  [HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\System]
  "DisableCMD" = -.
  [HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionPoliciesSystem\\\]
  "DisableTaskMgr" = -.
  [HKEY_USERS\.default\Software\Microsoft\Windows\CurrentVersion\Policies\System]
  "DisableTaskMgr" = -.
  [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
  "DisableCAD" = DWORD: 00000000
  [HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore]
  "DisableConfig" = -.
  [HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore]
  "DisableSR" = -.
  [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
  "NoRun" = -.
  [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
  "NoRun" = -.
  [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
  "NoClose" = -.
  [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
  "NoClose" = -.
  [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
  "NoSetTaskbar" = -.
  [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
  "NoControlPanel" = -.

  Save the new text file with extension .reg on your desktop or somewhere you can remember with a name you can remember, something like:

  enableit.reg

  After you save the file, close Notepad.

  Locate the file enableit.reg on your desktop and double-click it.

  Alternatively, you can right-click on the enableit.reg file, choose merge or open with... and select the registry editor or import.

  Answer in the affirmative to the question... Are you sure you want to add the information in the registry?

  You should then see a message that information has been registered in the register.

  Reboot your system and test to make sure the changes 'stick '.

  You can delete the enableit.reg file when you are finished.

  If the registry editor has also been disabled, you will see a message like this:

  Registry editing has been disabled by your administrator.

  We must therefore first difficulty (not a problem).

  Click Start, run, and in the type box (or just copy / paste the entire order in the window run more safe) the following text:

  reg delete HKCU/v DisableRegistryTools/f

  Then see if regedit behaves (of course it will be).

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