Antminer not detected after reboot

[treckpique]

Hi all,

After setting up a few days earlyer with the help of this forum's old post my antminer U1 it worked perfect.
but...
Somehow my computer rebooted last night and now he cant detected the antminer
I dont know why but it happend

does anybody has an sollution? or explanation?
I never overclocked the U1 if thats sorts out any explanations.
 

Sorry for the bad english