windows hides the cursors if no pointing device is physically plugged to the pc, SO you need to press start - type "ease of access mouse settings"- turn on - disable "use only when numlock is enabled", DONE.
As you activate this, the cursors turns visible again and you can move it from another computer using multiplicity.
This is not true. I run a server that has no mouse or keyboard and I see the cursor just fine.
However, upon booting, it will not show the cursors until the CPU load settles. Do you have something that runs a constant high CPU load perhaps?