Suddenlink Cable

Yesterday, I got cable service and my Suddenlink digital receiver works very well but today I came home from work and the box says "Error" when I try to turn it on then BR88 message, no knows what that means?

It may be necessary to reset. Try unplugging the box from the power source for at least 30 seconds, then start back up. If this does not solve the problem, please do not hesitate to contact me at tina-AT-suddenlink-dot-com.