When I swapped an SSD for a regular hard drive and reloaded my back, all my apps (such as Photoshop) started without problems. When I tried to start Microsoft Word, Excel, etc. I was told that I need a six-digit PIN. I cannot find such a number in all my documents related to Microsoft purchases. Wherever I use Microsoft Help / Customer Service, etc., I am always asked for my six-digit PIN. I have been using Word since the late 1980s. Can anyone point me to a link that will help me procure this holy grail? Thanks!