Quote: Originally Posted by oneextraid
In order for an W7 OEM to activate, the PCs BIOS must have SLIC 2.1 activation supported. If it is an older PC that version will not activate.
Thats not entirely true. The OEM DVD that you or I buy from say NewEgg, will activate with the included Product Code on any PC regardless of the BIOS SLIC table. Branded OEM media that would come with a PC from a major manufacturer like Dell or ACER, that uses SLP, System Locked Pre-Installation, looks for the BIOS SLIC table. If you install it on the PC it came with, activation is automatic and you don't get prompted for a product code. Try to use it on another PC that doesn't have the correct BIOS SLIC table and it fails the automatic activation and prompts for a product code. This has been done since windows XP. Vista uses SLIC 2.0 and Windows 7 uses SLIC 2.1. Not all PCs have the SLIC table. If you build it yourself the motherboard you buy from say NewEgg won't have a SLIC table in the BIOS. Dell, Acer, etc add the tables to their custom BIOS. They also add the matching files for detection to the install media. For windows 7 they add an $OEM$ folder in the sources folder. The Microsoft OEM DVDs you buy online or off the shelf at Staples don't have that folder and don't use SLP.