I've been using a SLIC modded GA-EP45-UD3 with Win 7 Ultimate for the past 2 years or so. After half a year, I was unable to install i.e. .net 4.0, games for windows client, run the genuine validation code creator, etc. They all came back with "generic trust failure". I tried repairing the system (SFC), replacing the certs, etc. Nothing would work. So recently, I reinstalled windows from scratch.. everything was fine, I could install everything again.. 2 months later, busted again. I put a backup from a month earlier back on, and all works once again. Windows says it's genuine and all.. anyone have any idea what could be causing this?