ChazzerB314 :
I'm upgrading my girlfriend's laptop from an HDD to an SSD. However, I'm also replacing her broken screen.
While I'm waiting for the new screen to come in, can I hook both drives up to my desktop and clone them there? If so what do I need and how do it do it?
Yes you can, as long as the actual target drive ends up in the currently broken laptop before you power it up for the first time.
Standard cloning operation...
Connect both drives in your desktop(?) as secondary and tertiary drives
Clone ALL the partitions from the laptop HDD to the new laptop SSD
Power off and disconnect those 2 drives
Don't do anything with the laptop SSD until it is fixed.
However...you've saved a whole 30 minutes, over just doing it with the laptop once the screen is fixed.
Personally, I'd just wait until the main problem is fixed...the laptop screen.