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I have a small problem when I reinstalled my notebook with Windows 7 or Windows XP home edition. the problem is I can't reboot my system if I didn't install display driver (ATI-Radeon). I can't reboot my system because of the restart's button on shut down menu disappear, thats mean the system cant be rebooting. And when I install display driver, the reboot button in shutdown menu will be appear, thats mean I cant access reboot menu. I just want to know,

  1. Why does it happen?
  2. Does the display driver have influence with the reboot process?
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Does only the reboot button on the start menu disappear or the whole start menu? Also what's the model number/manufacture of the notebook? –  Celeritas Jun 4 '12 at 17:50
    
yeah, the reboot button on the start menu disappear. the model is Acer AS4738G. –  RawR Crew Jun 4 '12 at 17:58
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To clarify the "restart button" is missing but the rest, such as "shut down" are there? Thanks. –  Celeritas Jun 4 '12 at 18:20
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2 Answers 2

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You can try the shutdown command. Open up the command prompt, cd %windir%\system32, and type shutdown -r -t 0. That should tell the OS to reboot. If you're on Windows 7, be sure to start the command prompt as Admin.

As with the reason why this happens, I could only guess that there is some sort of policy defined that denies the user rebooting. If you can access the Group Policy editor, have a look at this page: http://www.addictivetips.com/windows-tips/how-to-disable-remove-shutdown-from-windows-xp-and-vista/.

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Technically speaking the installer is just a program and can do anything it wants. The question to be asked is why did the author want to disable the restart button? I bet that disabling the restart button can be done by modifying keys in the windows registry.

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