Mention that preinstalling the operating system on the new PC saves considerable time, expense and trouble. After all, your expertise is valuable. You install system software day in, day out, so there is little question you're best equipped to do it well. Politely decline to expose your buyers or their businesses to such troubles. Point out the benefits of a legally licensed, preinstalled operating system.
Customers have the original CD so they can reload the software.
They also have a manual for everyday troubleshooting, and a Certificate of Authenticity that proves the software is legal. In short, protect your customer and your good name. Sell your PCs fully equipped with legally licensed operating systems preinstalled. If you want daily updates on news, enter your email address below, then click the 'Join List' button.