I dodged a big bullet this morning. I was playing an online video game when both computer screens went black. Of course, right in the middle of a dungeon run. 
However, both monitors were turned on. And the computer was on. I decided to reboot the computer and got this screen:

I've never seen this error statement before, and I started to panic. This looks like a fatal error of $$$$ proportions.
I recall what a computer technician once told me: "A majority of boot-up problems in a usually well-running computer are typically connection issues. Pull each peripheral component one by one, clean the contacts, and treat with a thin coat of DeOxit D5. Plug each peripheral back in one by one and try rebooting."
Sure enough, it was one of the memory RAM cards. All has been well.
This is just like problems with tube amps. A large percentage of sudden problems are connection issues.
BTW: The MAC address is specific for testing memory.
However, both monitors were turned on. And the computer was on. I decided to reboot the computer and got this screen:

I've never seen this error statement before, and I started to panic. This looks like a fatal error of $$$$ proportions.
I recall what a computer technician once told me: "A majority of boot-up problems in a usually well-running computer are typically connection issues. Pull each peripheral component one by one, clean the contacts, and treat with a thin coat of DeOxit D5. Plug each peripheral back in one by one and try rebooting."
Sure enough, it was one of the memory RAM cards. All has been well.
This is just like problems with tube amps. A large percentage of sudden problems are connection issues.
BTW: The MAC address is specific for testing memory.