In this case a defective video card caused the BIOS to sometimes detect a second network card, sometimes no second network card. The customer replaced the network card and the BIOS consistently detected the hardware. The license was then automatically accepted again.
Note that customers can add memory, change video cards, etc. without concern – we can just update the license for you. Send us a new license request and we’ll send you an updated license file. However, if your hardware appears to change on every boot then you need to fix that first.
Note that replacement licenses are free, but must be generated for a system under a maintenance agreement.