my sxt2 keeps beeping and doesn't work

hello,last night the electricity was out for some minutes(although the power adapter was in the power via a voltage protector device) and in the morning i saw i don’t have internet,i tried the default gateway it didn’t show anything so then i checked the adapter settings in the windows and it wasn’t disabled but it was unidentified network.i checked the cable it was okay ,i even changed the cat5 socket,noting changed.also the radio was beeping once for every couple of seconds,and inside the radio there was many led lights which the first 3 or 2 lights were always on and other led lights were off except every time the device beeped. I’m a first time user of your products and i didn’t find anything solid alike my situation. what should i do? thanks for your attention.

Use Netinstall.