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I have a problem with my ATI graphics card.
I have an ASUS K52JU, with Windows 7 and a ATI HD 6370M.

I recently updated my drivers from 8.x to 14.4 but while they were installing, suddenly the screen backlight turned off. It's like there's no brightness. I tried everything for changing this, but no effects where shown.

I found through Google a few posts that have "the same" problem, but they have a switchable graphics card. I don't know what to do for updating. Should I preserve the 2011 drivers for this?

I attached a video that I have found showing the backlight problem that I have, but I repeat: I don't have that kind of switchable graphics. Thanks. Any help will be appreciated.

Video: Windows 8.1 backlight is turned off in certain windows

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