Follow the link given below open hardware troubleshooter. From where exactly are you trying to install the drivers? Which drivers are you referring to? I would suggest you to follow the steps provided below and check if it helps: Method 1: Try to run the hardware troubleshooter and check what the issue is and fix it accordingly. I downloaded appropriate drivers for the laptop, but when i try to install them,the installer start normally but after few seconds the message saying that 'drivers were not installed successful and that will be the end. Settings are ok, hp notebook 620 the same case in hp notebook 620 toshiba satellite c660-268 i installed windows 7 ultimate 32bit. Hp probook 4520s, i changed windows to windows 7 ultimate 32bit, then i installed bluetooth driver and they are successful installed, but when i add device to my computer, it keeps on searching until the end of the day and no devices will be discovered. 2.3 MB DOWNLOAD Graphics ATI Video Driver and Control Panel 8.743.2.5 128.8 MB DOWNLOAD Graphics Intel High.
0 28.1 MB DOWNLOAD Chipset Intel Chipset Installation Utility 9.
Download HP ProBook 4520s Drivers Windows 7 (32-bit) & (64-bit) Type Description Version Size Download Audio IDT High-Definition (HD) Audio Drivers.
HP ProBook 4520s Drivers Download and software for HP ProBook 4520s Notebook OS: Windows 7 Home Basic (32-bit), Windows 7 Home Premium (32-bit), Windows 7.