With modded bios you must install W7 and when finished open up an administrative Command Prompt and insert the install Product Key command and Install Certificate command.
How do I activate Win7 with your BIOS? Hi! Sorry to bother you but I installed your bios, got the old Dell 2.0 SLIC certificate and used the SLP key but it didn't work, windows still says that is going to expire. Do I have to use a special certificate or key to activate windows properly?