Rockminer R-box not working

[s1lentb0b35]

Hi

I have 4 r-boxes running on windows 7 with cgminer and I have to power down briefly and since I have powered back up one miner isn't working.  It has power and the red light is on but cgminer doesn't see it. 

I tried the miner on mine peon as well and it doesn't work.  Tested a new USB cable and it doesn't work.

Is there anything else I can do or is it a paper weight now?

thanks

[philipma1957]

do you use a pcie to power it. try a different one .  one from the good working units.