I have 2 identical atom based machines that we use in the field. Both are installed with thier own, legal, copy of Windows 7 home prem. OEM. Sticker on the machine and everything. About once a month one of the machine comes up saying "This copy of windows is not genuine and needs to be activated" If you click on the activation dialog it goes out to the internet and activates just fine. In the interim I run updates just fine but after about a month it will go out in the field and boot up with "not genuine". Any thought on how to make it activate permanently. Would a clean reinstall do the trick??