Except I have no strong feelings for spuds so
No, to be honest, nothing. It bluescreens, and it tries to restart. Then it brings up little consoley messages (that's the scariest bit) saying things like 'Windows bootup failed', 'Lenovo (something) failed', 'USB 3.0 (something) failed', by which point I panic, hold the power button, give it a minute, turn it on, and begin to breathe again as it seems to work completely perfectly.
I am afraid I totally missed this VM until now, which would perhaps explain my complete absence on Steam at that time. Sorry man. :( I'll go check it now though!