Your laptop is totally fine. The numbers are always slightly lower when shown this way, on any laptop. My "500G" hard drive actually reports 468GB. It also show

Your laptop is totally fine. The numbers are always slightly lower when shown this way, on any laptop. My "500G" hard drive actually reports 468GB. It also shows 15.3G of RAM instead of 16G. They just round the numbers so it sounds nicer in ads. Enjoy your new laptop. Thinkpads are awesome.