Computer no longer sees network

Hello,

We have an office network with multiple computers on the wifi. We moved one of the desktop PCs to a futher office. It used to see our wifi network but no longer does. However, it sees other networks. When we take one of the laptops in that office though, it sees our network as well.

We have a Netgear 8 port Dual Speed Hub and a Westell 327W-15 modem.

I've tried updating the drivers and that didn't work. We also tried boosting our wifi signal Please let me know if you have any advice.