Sorry if this is th ewrong forum...newbie etc..please forgive my sins lol!

I have apod farm 2 and its all updated etc. It is a ux1 connected to my laptop which has reaper installed. Everything was working perfectly then suddenly I get no guiatr signal through the box. I get a signal with a mic plugged into th ebox ok. I have updated pod farm and reaper. re installed Pod farm etc and re booted. Checked the obvious guiatr cables an electronics tried different guiatrs and still no signal thru the guiatar input on the ux1 box. I didnt change any settings that I know of..it just suddenly stopped working. Any ideas what I should do??

many thanks...I know its going to be something simple ...erm...I hope lol!