Problems with Antminer U1 - why doesn't it work?
I had the same error "Bmsc recv golden nonce timeout" after to try Windows10 Install. So I reinstall Zadig drivers, and reconect my U3. So works fine again.
I dont know if is your case, but:

To reinstall your Zadig (http://zadig.akeo.ie/):
1) choose Options | List All Devices
2) Select CP2102 USB..
3) Choose "Replace Driver"