There are no driver for AMD chipset but if in case u are a CQ56 user and need it you can leave your comments below.
Base on the Official driver release there are no Chipset driver.
Compaq Presario CQ56-204CA Audio Driver
Realtek High Definition Audio Driver (32 and 64 bit)
Compaq Presario CQ56-204CA Graphic Driver
ATI Mobility Radeon Graphics Driver and Catalyst Control Center
Compaq Presario CQ56-204CA Wireless and Network Driver
CQ56 model equip with different wifi devices, so choose base on your specs, If you confuse what wireless device your laptop have, try Install and see which work for you, installing wrong driver will not harm your system.
1 Atheros 2011 Wireless LAN Driver :
2. Ralink 2011 802.11 b/g/n WiFi Adapter :
3. Intel PRO/Wireless Drivers for Microsoft Windows 7 :
4. Realtek RTL8191SE 802.11b/g/n Wireless LAN Driver:
5. Ralink/Motorola Bluetooth Adapter Driver
Realtek NIC LAN Driver
Realtek 2.0 Card Reader Driver
HP Quicklaunch Button
Synaptic Touchpad Drivers
NOTE: There are no official release for webcam so recommend you to use this driver if you need it.
Cyberlink youcam software 2.0