So first up, lets confirm, do you have a working PC and a non-working PC? Was this from the “working” PC or the not working?
First up, the picture you show with just “Pinging” is bad… If you connect Fez, and then you use MFDeploy to PING the device, you should get back “TinyCLR”. Test that on both PCs, with the same Fez. Do you get TinyCLR back correctly on both?
MFDeploy is the way you verify the firmware version. Do that by using Target -> Device Capabilities
You can also see debugging messages by Target -> Connect. Or press F5.
You can also update the firmware on devices, as per the manual process described on the Wiki - see http://wiki.tinyclr.com/index.php?title=Firmware_Update_FEZ_Cerberus for the instructions
Use my earlier instructions and report back what you find.