just in need of some help.
i have a main pc where my wireless router is connected thru an ethernet cable. i then have a laptop and another pc connected wirelessly and a playstation connected wirelessly. over the weekend i installed zone alarm firewall on my laptop. on sunday i switched my main pc off and today switched it on to find the internet not working. the other 3 devices are connecting fine to the internet. after spending hours configuring the modem with my isp and getting error code 65. they finally said there is nothing they can do as they see the modem is working and it must be a fault with my pc and zone alarm. i couldnt fully uninstall zone alarm after numerous attempts at different thinggs i found on the internet. so i did a full format of the hard drive. i have my laptop up and running again but my main pc still wont connecct to the internet.

please could someone help