Compaq C700 lost wireless adapter connection

Good morning

I dont know if anyone can help. I have recently upgraded my Compaq C700 from Vista Home Basic to Vista Business due to several issues with slow processing speed and issues with booting. Vista Businesss seems to be working fine and a vast improvement, however, unfortunately the wireless connection no longer works.

The button on the keyboard remains orange. I have looked under device manager and under networks it is showing two unknown devices. On wireless network search, it is showing on broadband LAN connections and no wireless options. If I click on wireless options, I get the message that the wireless adapter is not installed and configured.

I have downloaded a programme called Driver Robot which claims to note that the wireless adapter is missing and provides the driver. However, this does not seem to install on download.

Any assistance much appreciated.

Have a look here Compaq Presario C700 Notebook PC series -  Download drivers and software - specify product name - HP Business Support Center

You have not stated if it is 32 or 64bit that you are using so I can not give you more help.