thunderbolt monitor wont wakeup

After sitting in sleep mode my Thunderbolt monitor wont wake up. Nothing and I mean nothing I try seems to bring it back to life. I have a micro business, and Im dead without this thing. I just cant lose man days and manweeks with these stupid issues. Im am ready to go back to PC. Ive read threads about downloading updates and firmware updates, etc, etc. How do I do that with a montor that wont turn on? Any ideas to just get this thing going....Please Help!!