So, I charged up the battery to about 80% When I hold down vol up and down and plug in the phone, nothing happens, no screen and now that the battery has a charge the capacative lights are not blinking. I really don't see how flashing a rom could cause the display to go out or cause the device to become completely unresponsive.
You don't understand linux well then. The linux kernel contains all the drivers for the hardware in your system. The same is true for android. Your boot.img contains drivers for everything from the speakers, to the LED lights behind your screen. But here's what happened with what you flashed.
The device needs to go through a boot chain, starting with ABOOT. It then goes to SBL1->SBL2->SBL3->TZ->RPM->KERNEL (it may not be exactly this, but it's very close). When you flashed the ROM you did, you overwrote TZ and SBL3, which means the system no longer has a valid boot chain and hangs.
Now, when we do a factory reset, it puts a flag on the /misc partition which changes the boot chain to be ABOOT->Recovery . However, the ROM you flash deleted the Recovery partition as well. You don't notice it until a reboot though, as what you're seeing on the screen is entirely loaded into the RAM at the time.
Now here is what I don't understand. ABOOT should trigger on it's own and still give you the option to set the factory reset flag, even if your recovery partition doesn't exist. But as you've reported, you're not getting that option. ABOOT should also contain everything inside of it to enter "download mode". It was designed this way in case of a catastrophic error in another partition. As long as ABOOT is good, recovery is doable, and I've done a lot of work with the bootchain to know this.
So, we're back at square one. Here are the possible scenarios.
1) ABOOT is corrupt and you're holding a brick in your hands.
2) Hardware failure on the screen which is preventing you from seeing it. You're PC should still pick up the phone once it's in download mode though, so I suggest trying the recovery tool, even if you can't see your screen. Just hold down both volume buttons, put the battery in and connect the USB cable. Keep holding them for about 5 seconds. That should be long enough for ABOOT to kick in.
3) The volume buttons are broken (probably vol down) and it's preventing you from setting any flags with ABOOT
4) There is more to ABOOT than even I know about and you found a way to brick a phone, even though it has a function ABOOT.
I'm not really sure which scenario happened, but if you can't get into download mode, you're dead in the water as nothing else can fix you're phone at this point.