Acer laptop will not recognize working flash drives

[mco]

My wife's Acer will not recognize working flash drives. The system detects a removable device but then prompts that "the disk in drive 'x' is not
formatted", even when it is...

Any ideas?

 

[mco]

My wife's Acer will not recognize working flash drives. The system detects a removable device but then prompts that "the disk in drive 'x' is not
formatted", even when it is...

Any ideas?

Just renewing in the hope someone has a solution...