This sounds like a WLAN adapter driver problem. Have you opened the HP wireless utility and turned it off. Should be a check box, to either let HP manage or let windows manage.
Check your driver version in Device Manager
Lastest from Compaq
is 18.104.22.16808 (1 Nov 2004).
You might also check Event Viewer
, you can sort events by clicking on tabs, date time.
Edited by ratchet48, 10 February 2010 - 06:47 AM.