Post new question
Posts: 1
Member Since: ‎10-13-2011
Message 1 of 2 (2,245 Views)

Display & power issues - HP ProBook 4520s (Windows 7 64-bit)

Hello all


I have an HP ProBook 4520s (WIndows 7 64-bit). Several months ago I was promoted to upgrade one of the ATI drivers, which I did (sorry, I'm not sure of the details).

Ever since I did this, I've had several issues with the display and also the power options.




1 - I don't have the options to connect to projectors or other external screens, through Fn F4 or any othre means, and it's not detecting automatically either;

2 - the screen brightness seems to go to about half the level it did when new, and the brightness icon doesn't show any change when i increase the brigtness (this is even when plugged in to the power pack)




1- I don't have the option to sleep or hibernate, from the Start>Shut Down menu

2 - the laptop won't hibernate when i close the lid, and it doesn't have the option to change this setting in any of the power management options


Any ideas of how i can either update drivers (and which i should update with) or how i can return to default settings?


Other than that, it's a great laptop for my work.




0 Kudos
Posts: 85
Member Since: ‎10-12-2011
Message 2 of 2 (2,233 Views)

Re: Display & power issues - HP ProBook 4520s (Windows 7 64-bit)



This seems to be driver related issue. The drivers were intended for you laptop or just downloaded from AMD / ATI website?


My advise is to uninstall the drivers that you just installed, reboot the machine and then install this drivers for your laptop: 


Best regards,


† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation