My motherboard (NF680i based) died a while back along with my graphics card (new Radeon 5870). I replaced the motherboard with a P45 based one and RMA'ed the graphics card. Anyway I finally got a new card today and so I'm going to re-install Windows 7. However it's an OEM version and whilst I never had problems with Windows 2000 and XP I've heard MS have changed their stance a bit with 7. Now strictly speaking I replaced the motherboard because it was faulty but was unable to replace like for like as no one stocks NF680i boards anymore. Am I going to run into any problems when I re-install?