Is that S7 getting power only from USB or is there an external power supply? If only USB maybe try with a powered USB hub.
Since it doesn't switch over to horizontal it seems like it doesn't get enough power.
Maybe try different drivers?
"A modern "Universal" LNB requires a 22 kHz signal at 0.5v p-p to switch its Local Oscillator to 10.6 GHz ("high band"). Otherwise it uses its 9.75 GHz oscillator.
Polarisation switching is controlled by DC voltage supplied by the receiver. 12.5v to 14.5v gives vertical and 15.5 to 18v gives horizontal polarisation. A higher voltage than that can damage the LNB. A voltage that is too low will prevent the LNB from working correctly."
I'm really running out of ideas, let's hope that Oberon got some!
ASUS P8Z77-M PRO, i5-3570K, 8gb, W7-64,TBS6985,TBS6981,TBS6980, TVSource V5.0/Connect Server V5.0
Clients: 3xXBOX360, 4xPC W7, PS3
Octo LNB, EMP-Profi class MS9/12PIU-5 V10(Multiswitch), Thor (0,8W) / Sirus (4,8 E)