I had a similar experience-- unknown USB device and the device descriptor request failed-- when I bought a YPT-400 and tried to use it with Yamaha's USB-MIDI driver. The driver worked perfectly with my PSR-E433 and PSR-E443, so I mistakenly assumed that the newer versions of the driver must be incompatible with the YPT-400 (which had shipped with an older driver that was designed for earlier versions of Windows). It took nearly a year for me to accidentally discover that the problem was caused by the way I'd installed the driver.
In particular, I discovered that if the keyboard had not been connected to the computer and turned on before trying to install the Yamaha USB-MIDI driver, the computer wouldn't be able to recognize the keyboard. However, this recognition isn't based on the actual model ID (PSR-E463, PSR-E453, etc.), but rather on the descriptor that's usually shown in square brackets above the MIDI Implementation Chart-- or if not there then on the cover of the Owner's Manual. So the driver that I'd installed with my PSR-E433 connected was able to recognize the PSR-E443 that I bought later, since the PSR-E433 and PSR-E443 both use the same descriptor; but it wasn't able to recognize the YPT-400 because it uses a different descriptor. I had to uninstall the driver and then reinstall it with both the PSR-E443 (or PSR-E433) and the YPT-400 connected in order for it to recognize both descriptors.
However, that's with regard to installing the Yamaha USB-MIDI driver. The procedure is backwards for installing the Steinberg USB driver-- according to the installation instructions, you must install the driver without having the keyboard or other USB devices being connected (aside from your mouse and computer keyboard), and connect the keyboard or other USB audio device only after the Steinberg USB driver has been installed!
If uninstalling the driver and reinstalling it using the procedure given in the installation instructions does not work, then the only other thing I can think of is that perhaps it has something to do with the laptop. I haven't installed the Steinberg USB driver on my laptop yet, so I'll try installling it wrong (with the keyboard already connected) to see if I get this issue-- and if I do, I'll uninstall the driver and try again without the keyboard connected to see if the issue still occurs.