Hi, and WELCOME TO TECHIMO - from the Folding@Home Team [#111]...!
As you've stated that you're using a LT, it could possibly be that the device has been disabled. Whether this can be re-enabled by a key-combination (often [Fn] + [F_number] buttons together) or it might need to be done through the Device Manager...
Let us know how it goes, and any other information that might be useful (like GZ3's questions above) if it doesn't work....
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I've seen the light... It was green, flashy and attached to a Network Interface Card...
Whenever someone says "You can't miss it" I invariably do...