Have you tried booting the recovery disk on the working PC (not to do anything to the good PC obviously, just to verify that the recovery environment comes up OK.
If it does, follow the advice in your previous post. Go into the BIOS and make sure those memory options are turned off.
(The BIOS splash screen will have instructions somewhere telling you how to get in
It's the "delete" key on my Asus mobo, other vendors use Function keys or "Esc", it'll be somewhere on the initial screen you see as you boot)
Once in there, just have a look around. It's fairly intuitive, they're all very similar. Look for a memory option in the 1st menu, then wing it from there. If you feel you've done something silly or wrong, don't worry, nothing changes till you "exit saving changes". You can search around and investigate in the BIOS with complete safety. It won't do anything without you specifically forcing it to.
If you're sure that your recovery disks are good, you can use a 3rd party partition manager (gParted can be downloaded free if you don't have one) to format the HDD before you attempt a factory reset, but investigate all other possibilities first.