There is a computer on our domain that is blocked from intranet and internet. The firewall isn't blocking it as it can't get that far. I think an old IT company blocked the network connection locally on that computer instead of connecting it to the network and blocking on the firewall. I looked in the run>MMC but there are no policies there to block. The network connections are enabled. I installed a USB wireless device and it sees our wireless but when it connects it has limited connectivity and doesn't even see the intranet, hence why I am thinking the old IT company blocked all network connects.
What should I look to undo?