I have a laptop (Asus K55D) with two OS, Windows 8 and 7, operating through a KVM switch (trendnet tk-409). It is also connected to a Linux machine. Linux machine works fine. When booting the laptop, the Bios and the boot selection work fine too, and so does Windows 8 when booted. But when booted into Windows 7, while the display works, the keyobard and mouse do not. (If there is a problem, and Win 7 presents the "You did not shut down cleanly last time, maybe you want safe mode" menu, it works there too!) Any thoughts?