With reference to this post,
I encountered this problem last night, on a Vista installation. Right-clicking the taskbar, then selecting Properties -> Taskbar and Start Menu Properties -> Notification Area -> System Icons -> Battery does not work, because the check boxes are greyed out.
The easiest solution is to hit Ctrl+Alt+Del, bring up the Task Manager, and then restart explorer.exe. Here’s the solution that I’ve directly taken from Akshit’s reply to that thread:
- Go to Task Manager.
- Go to Process tab.
- End the “explorer.exe” process
- Go to Applications tab
- Select “New Task…”
- Type “explorer.exe”
Hope this helps somebody, as Akshit’s reply was about halfway down the thread.