computer fails to connect to my wireless network

ive had my wireless network up and running for like a year and a half. but just recently after an automatic windows update completed i got a message saying a usb device has malfunctioned. and then i got a blue screen which i think it said i had some irq sharing problem "if you havnt seen this screen before restart if you have contact blah blah blah" (ive never seen it before so i restart) when windows loads up again a diolog box comes up off of my wireless network icon and says unable to connect to preferred wireless network. it hasnt ever since. the pci adapter picks up the signal of my router but it just wont connect. every once in a while ill start up my computer and it will connect to the network like normal but a couple of hours later it will disconnect on its own and say unable to connect. the devices i had connect in my usb were a logitech wingman joystick and a cable that connect to my camera the camera was disconnected at the time though. I have windows xp home edition service pack 2. can anyone help me. i made this thread before but it has fallen too far back. help would be much appreciated. thanks!

 

no double posting http://forums.afterdawn.com/thread_view.cfm/289193