How do I adjust screen brightness HP 320-1120A

Tried FN F7 etc but no good.  Screen is too bright, especially when showing pages with white background. All help gratefully accepted!
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Hello Irobbie:
           You pressed the wrong F keys. Press F-10 for dimming the screen. F-11 for brightness. The key board doesn't work then go to control pannell and click on systems on the left bottom click on Performance Information and Tools under Windows upate. Now click on Adjust Power Settings in next window top left side. Now in this window in tne bottom center you will see Sceen Brightness slide the box arrow across bar to desire brightness setting. You are welcome please click on Kudos if this has resolved your issue thank you. frrw

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