Did you see the brief message on a white screen saying that the SMC command was handled successfully? I really can't help you if you do not provide more specific information. Even in that case, I've only performed this procedure on a 4540s; it might be different on your hardware.
I just ran into this "Product Information Not Valid" problem this week with my daughter's ProBook 4540s. I'll relay the steps that I successfully used to remedy the problem, and hopefully save someone else the days of unsuccessful attempts. I believe these steps will be nearly identical for all...
This is a photo that I took of the System Information screen when I updated the BIOS to F.60 a year and a half ago. Most of this information is printed on your computer, but it's awfully difficult to find and determine what the text actually says.
Underside of an HP Probook 4540s. You don't need to dissemble as far as I did, just take the cover and battery off. I was unable to ever find a System Board CT that met the 14-character alphanumeric criteria physically on the laptop.
Envy 17-J100 10.11.4 audio
Be aware that 10.11.4 Beta will remove your Built-in audio device. This is fixed by running:
$ cd ~/Projects/envy.git
$ ./patch_hda.sh IDT76e0_Envy
Creating AppleHDA injector for IDT76e0_Envy... Done.
...or at least I think that's what fixed it; I struggled for...