Wireless internet not working

Okay the problem started yesterday. At first i could not see my router(1) but i could see the other router(2). My router(1) is 300yards away and i use a high gain Nic to connect to it. Now today i see my router(1) and it connects to it but says there is a problem so no internet. But i can connect to the other router(2) and run internet off it. I need to be using Router(1) because its closer. I tried resetting the router(1) but still have the same problem. No internet or my Wireless NIC don't see it. I am wondering could my high gain card be going out? Or my router's wireless going out?:confused