my freind recently bought a lenovo which came with a preinstalled home premium x64. but it was with a single partition of 320 gB and lots of bloatware. so he has decided to format it and reinstall a win 7 sp1 x64 home premium edition.. now the problem is he wants to make it a genuine win 7 and after format the machine will loose the activation.. is there any way to activate genuinely the new copy with the existing activation ??? the laptop has a oem:coa key printed on the back.. he dosnt want to use it and want to keep it for future.. all of ur suggestions will b realy appreciatd..