Quoted from dluth:
Thanks for the screenshots. This should be a key post. I had the problem of my machine not booting and didn’t realise it was a BIOS problem. I hadn’t changed my battery but something had happened to reset this BIOS. One thing I realised is that if this happens you can unplug the little graphics auxiliary board and the game will boot to the main screen - so you don’t have to bother with plugging in a new monitor at all.
I ended up getting into the BIOS eventually and the only setting I needed to change is in the screenshot below - IGD Multi-Monitor from disabled to enabled.
Interesting. I pulled the cable from the video card, I didn't think to remove the card. It would have been a lot easier to change the battery if that card was not present. If that card is easily removed, that may be the solution to changing the battery with the power on. Although at that point, why bother if it's only one BIOS setting. What is interesting is my machine before I messed with it chose IGD- Integrated graphics device. Yours defaulted to PEG as did mine after erasing memory, but you found an option within PEG- PCI Express Graphics to get it to function. More than one way to skin a cat I suppose.
I just looked at our pictures one more time because I don't remember that multi monitor option. We are not running the same BIOS revision. Your version is much newer than mine. I'm at 1.21B1, you are 1.7. MSI web site shows 1.9 then 7817v1A as the most current. I read the revision notes and didn't see anything that would necessarily help the game run better, but I'm far from an expert. I really don't feel like opening that thing up again, but I think some BIOS settings may have changed with the revision.