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I upgraded to Windows 8. When I have a window maximized (eg. a browser) on the desktop, there is a vertical scroll bar.

I can use a mouse to scroll up and down by clicking the scroll bar, and dragging it up and down.

However, if I try to click on the right-most pixel (column 1 pixel wide), the scroll bar doesn't work.

If the scroll bar is not there, what is there? When I click there, nothing happens. It can't be the charms bar, because it only shows up when the mouse is on the top right/bottom right corner.

If it has no purpose, how can I get rid of this behaviour? Obviously when I try to drag the scroll bar, I get trapped on the right-most pixel column a lot.

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Ok, I worked out why. It seems I managed to get two graphics card drivers to run at the same time, so my computer thought I had two monitors (only the one on the right didn't have an actual monitor to display on). I am now uninstalling everything and reinstalling my graphics card drivers - hopefully it will fix it. –  ronalchn Nov 1 '12 at 13:50
    
Instead of reinstalling drivers you can try this: right-click on an empty desktop, choose Screen resolution, then click Detect in the upper-right corner. It should reduce the number of monitors to the actual number. –  DzinX Nov 1 '12 at 15:42
    
that doesn't work, because I have am using the AMD reference driver on top of the HP drivers to get it working. I disabled the 2nd screen, using Display desktop only on 1 setting. –  ronalchn Nov 1 '12 at 21:33
    
So after removing the 2nd desktop, I find that Chrome and most other applications are fixed. However, for some reason, notepad still has this problem. –  ronalchn Nov 1 '12 at 21:34
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1 Answer

This 1-pixel-bar isn't there for me, tested with Firefox and Internet Explorer, both desktop and Metro Modern UI.

Most likely, a process you are running is showing something there. Try running Process Explorer and dragging its "target cross" to the right of your screen to see which process holds that object.

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Thanks for your reply, where do I find the process explorer? –  ronalchn Nov 1 '12 at 12:58
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You can download Process Explorer directly from Microsoft here: technet.microsoft.com/de-de/sysinternals/bb896653 –  fefrei Nov 1 '12 at 12:59
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