I have a t420 from 2007 still kicking strong. but its slow, unusably slow even with a fresh win7 install. maybe disk is too full. not worried about the certs,

I have a t420 from 2007 still kicking strong. but its slow, unusably slow even with a fresh win7 install. maybe disk is too full. not worried about the certs, will be installing a fresh non-lenovo copy right away I like the new t450s and w550s