Hpo Scanner Could Not Be Initialized Windows 7 Can Someone Help Me With My Biology Homework?

Can someone help me with my Biology homework? - hpo scanner could not be initialized windows 7

Eyepiece 10x =
Scanner = 4x
LPO = 10x
HPO = 40x
LPFV = 1.5 mm.

1. What is the maximum increase in total can be achieved by this microscope?
2. What would LPFV micrometers?
3. What would HPFV in micrometers and millimeters?
4. When 5 cells could flounder in scanners FoV keep what is the measure of each cell in micrometers?

It seems math lesson in biology now.
Many thanks to those who would help me.