Yeah, I had a similar problem. The only ROM that worked for me was the newest AT&T ROM (1.61.502.2) that was posted in the Kaiser ROM wiki. All the other ROM's failed (even the same build that was on my device). This was after I was trying to put on the HardSPL to get it unlocked.
I had the White Screen of Death and was testing some new builds of the SPL stuff and got into the 3 color state of doom.
I had this problem yesterday. I went through the "recovery" process. This brought me back to the 3 Color screen. From there I clicked the HardSPL exe. Pressed enter, let HardSPL run for a few seconds(the screen didn't change but I could hear the laptop working). Then opened the RUU for any ROM I wanted to install.
This avoided installing an intermediate factory ROM.
This only works one time each time I recovered. If I canceled out of the RUU I had to go through the recovery process again.
1. Unplug USB
2. Remove Battery
3. Wait 3 seconds
4. Install battery
5. Turn on phone
6. Plug in USB
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