PC Doctor is not very good at diagnosing problems, is it.
1. On the laptop you are having problem with first disable the connection and then re-enable it. did this work, no move on.
2. Right click the taskbar icon showing limited or no connectivity and click on 'status' then 'support' tab. Is assigned by DHCP the address type. also check the IP numbers are there. No,,then disable and re-enable it again. Yes, move on.
3. click start, select run and type 'msconfig'. Sroll down to find the Wireless Zero Configuation (WZC) is it running, no right click and select start. Yes, right click and stop it then restart it again...
4. re-enter your WEP or WPA key again and then try and connect.
5. Not working, try a wired connection, Works, yes.
6. Uninstall and reinstall the wireless card driver and then check to see if it enabled from device manager. It must be enabled to work.
Not working, click here
Post back please...