I have installed the windows 7 RTM on three Dell computers, and have used a program called 7loader to activate them. The first two computers were about a year old and activated fine, windows genuine and everything. The third Dell, which is ~three years old, had no effect when using 7loader however. I was planning on installing the RTM on my main machine in a few months (Aion release is coming up and I don't want any problems for launch), but seeing as 7loader has failed to activate this computer I am afraid it might fail on my rig and royally screw me over.
TL;DR: Have any of you guys used 7loader and know if a compatibility issue in the old Dell bios may be the reason for it failing to activate the win7 RTM? 7loader uses a SLIC 2.1 bios modification to activate the RTM, so I was thinking that might be the problem.