USB ports/devices not working under Windows-7 after Bootcamp installation on MacBookPro Retina Late 2013. SOLUTION: Use USB 2.0 stick for Bootcamp driver downloads
1) INSTALLATION
I used Bootcamp (v. 5.1.1, OS X Mavericks) in combination with an original Microsoft installation DVD disc in an external optical CD/DVD drive. Note, the installation is NOT done from a Windows-7 ISO image.
In the Bootcamp setup menu, only the lower two of the three options are selected, namely a) download Windows-7 drivers to a USB stick, and b) partition the harddrive and then to install Windows. The top option using USB stick together with ISO image ist not selected.
2) PROBLEM
After the initial Windows-7 installation, no devices attached to the USB ports can be found under Windows-7. All USB ports are dead. Also several other hardware components were not functioning (such as wireless). It is a hardware driver issue.
3) CAUSE
This hardware driver issue is caused when using a USB 3.0 stick in the destination drive for the Bootcamp driver downloads. It seems that Windows-7 cannot recognize the USB 3.0 stick properly during the Bootcamp/Windows installation process, thus failing to do perform a proper installation of several Windows-7 hardware drivers.
4) SOLUTION
Embarassingly simple: Use instead a USB 2.0 stick and everything will work perfectly.
Follow these steps in order:
1) Connect external DVD drive to a USB port and insert the Windows installation disc
2) Start the Bootcamp utility
3) In Bootcamp, remove the previously failed Windows-7 installation and partition completely
4) In Bootcamp, redo the entire setup process, but this time using a USB 2.0 stick
5) Follow all further steps in Bootcamp and Windows-7 installation process
6) Towards the end you will be asked to confirm the installation of all Bootcamp/Windows drivers
7) Bootcamp now properly installs all the Windows-7 drivers
8) Your Windows-7 installation now works like a charm
MacBook Pro with Retina display, OS X Mavericks (10.9)