I am planning on selling my Dell XPS L401X Laptop on Ebay, but I need help with a few things regarding Windows 7. I reinstalled it using the disc I got when I built my current computer but didn't use a product code and now it is saying that Windows may not be genuine. Is there any way to fix this, and would calling Microsoft get this fixed for me? I would really appreciate any somewhat accurate/helpful answer because I am looking to upgrade this computer and finding work has been pretty tough for me so I am not sure if I will be able to make any money any time soon.