Thank you, this works but what does it do? Is this a program that is running in windows all the time or a real bios mod? Tried to change cert and it works for a short time then MSI_NB_V2.1_Cert.xrm-ms is automatically reinstalled. I use a A$U$ OEM SLP key atm and that should not work with MSI cert right? Tried a D3LL key also with same result. Pls explain this tool what it does. I used SLIC ToolKit V3.2 to test and see this behavior.