I recently ran a dreadful programme called Premium Clock (beware!) which, without being asked, changed all the default fonts and colours on my PC (Windows 7 x 64). I've managed to restore most of them, but the bars in My Computer which should turn red to show low disc space stay black, however low the space is. (I know some folks don't like this, but I find it useful.) Can anyone suggest how I get the red colour back? I've tried system restore, but it doesn't work.