Can't get WIFI to enable
 

I inherited a Sprint Treo Pro from my daughter-in-law... I cant seem to get the wifi to enable. I go to the com manager and click the turn on button, the little wheel turns for a little while then back to the screen without wifi on...
If I go to the menu/settings/wireless lan it tells me that wifi is off and offers to turn it on. I click the link and nothing happens. If I go to settings network cards it shows "IEEE 802.11b/g Compatible WiFi Adapter" is there. I have tried a hard reset/soft reset to no avail. Help?