How to Fix USB Keyboard not detected in Windows 7

USB keyboard is plug and play device. Windows automatically installed generic USB keyboard once you plug it on your computers. There are 2 main reason why your USB keyboard not detected in Windows 7 , the first one is windows installed wrong driver, and the other one is your generic keyboard driver files are missing.

Prevent Windows Automatically Installing Drivers

If you are connected to the internet, Windows will obtain the USB keyboard driver from Windows update. Once it installed the wrong driver, your USB keyboard will not work. What you need to do is stop Windows from automatically install driver.

1. Open control panel.
2. Choose devices and printers.
3. Right click on your computer Icon.
4. Select device installation Setting.
5.Select "No, Let me choose what to do"
6. Select "Never install drivers from windows update".

Other things to check:
1. Make sure to test your USB keyboard on other PC to make sure it is still working.
2. If your keyboard comes with installation media, reinstall the driver could resolve the issue.
3. If you have USB 3.0 port, make sure you USB is compatible with USB 3.0 slot.

hp 8510p Drivers for Windows 7/8

HP 8510p Drivers for Windows 8/8.1.
This model already tested with Windows 8 (The edition was Windows 8 pro), and it turn out all of the drivers automatically installed except Card Reader and HP 3D Drive Guard. So here is the drivers you need to install:

Driver 1 : Ricoh Card Reader Driver
Driver 2 : HP 3D Drive Guard

HP 8510p Drivers for Windows 7. (32 and 64-bit)
HP website provides the original drivers for this model on their wesite. If you want to download it right away here is the quick direct link:

Audio : ADI AD1981HD Audio Driver for Microsoft Windows 7 
AMT Chipset : Intel AMT Driver
Storage : Intel Matrix Storage Manager

There are 2 applicable Graphic driver for this model, choose base on your specification.
Graphic : AMD Graphic Driver
Graphic : Intel Graphic Driver

HP QL : HP Quick Launch Button
Touchpad : Synaptic Touchpad Driver
Modem : Conexant High Definition Audio Modem 
Wireless : Broadcom Wireless Driver
Wireless : Intel Wireless Driver 
Bluetooth: HP Integrated Module with Wireless Technology 
Card Reader : Ricoh Media Card Reader Driver
Security : HP 3D DriveGuard