thanks for the ideas guys
Didier: yes, I think regardless of whatever probs I'm experiencing, I AM, as a matter of fact, using a different keyboard since my all-time favorite keyboard stopped working on me the other day.
I'll attack the problem again when i have replaced the keyboard.
Doug: yes, right again! my PC is a UEFI and hers is not!
The other thing, don't know if this will be a factor or not: the stick is USB3, while her lenovo is not USB3-enabled.
thanks again for the great advice and tips guys