Hi Leslie, welcome to the forums
Please don't double post, it makes support more difficult
Can you please let us know how you installed Windows 7 on your laptop?
For your desktop, please run the Windows 7 upgrade advisor
from Microsoft, it should tell you of any hardware conflict
The best would be to burn the downloaded iso to a DVD, boot from the DVD and install from it. Recommended is to do a clean install
, but you are eligible for an upgrade from Vista if you have a valid license for your desktop. You can also do a clean install with an upgrade disc
please give us more info about your laptop so we are able to help further. Please fill in your system specs and qualify "nothing on my computer is working"