Highly unlikely your AVE is fried.
If it wont boot without priiloader reset to ground, its likely a wiring issue. I suspect USB. Your method of "twisting wire" by having one wire wrapped around the other is not correct at all. For USB, both lines should be the same gauge, as close to the same length as possible, and wrapped around each other evenly. Your red wires are substantially longer than your green wires, and it appears the wires are very different thicknesses. Without proper twisting, the USB data lines will not cancel out interference. For more details on why this is so important, look into "differential signaling".
Another source of priiloader working and nothing else working can be bad U10 wiring or not installing the Wifi Patch. Are you sure you relocated the U10 properly, every connection is correct, and it is behaving as expected? Are you sure you installed NoWifi patches?
If you have activity on the color lines but not the sync lines, sounds like you didn't properly install VGA patches. Plus you saying "Component works fine" is also a sign of this, as VGA patching disables Component Video.
One last thing, you mentioned BB Loader. Are you running BB Loader or RVLoader?