AFAIK, according to the ACPI specifications you can't have two SLIC tables at a time. Windows can't be activated on this situation by oem:slp method. Btw, it looks like a valid key for 8. Code: Product Key : R96C9-NVT97-6VH9D-HW6M2-XXXXX Validity : Valid Product ID : 00179-60322-37647-AAOEM Activation ID : 9e4b231b-3e45-41f4-967f-c914f178b6ac Edition Type : Core Description : Win 8 RTM Core OEM:DM Edition ID : X18-15561 Key Type : OEM:DM Crypto ID : 1796