ASUS P5QL Pro issues - Won't Post

Hi,
I built a system approximately 9 mos ago and recently began having problems.

Asus P5QL PRO MOBO
Intel Wolfdale 2.8 Ghz LGA 775 Dual Core CPU
4 GB Corsair XMS2 DDR2 1066 Mhz RAM 2 x 2 GB
eVGA 9600GT Superclocked VGA
Antec 550W modular power supply


I had the computer go into a BSOD boot cycle, from which I was able to discern that I memory issues. One of the 2 GB sticks of RAM died and I RMA'd it to Corsair.

Yesterday, my new RAM arrived! In the meantime, while I was waiting for my RAM to show up, I ordered a new WD Caviar Black 1 TB HDD.

I installed the new ram in slots A1 and B1 to run dual channel, and started my system.

Got the post beep, and checked the RAM, the MOBO recognized it, and I started to install windows 7 after formatting, and creating a couple of partitions in my new TB drive.

I got everything installed was able to surf online, and went to windows update. Downloaded a bunch of updates, rebooted and went to bed after it said it had completed updating.

Wife woke me up 30 minutes later saying that the computer was froze up, and wouldn't do anything.

Sure enough, it was locked up so I re-booted it, and now, I can't get the board to post.

I have the green power LED lit up on the mobo, the case fans spin up, I can hear the HDD spin up from start, but no post beep.

My gut instinct tells me I have memory issues still, or, my mobo just took a crap on me. However, I haven't built a system in a while, and am a little out of the loop.

Could I bother some of the bright folks on this board to help me figure this out?

I am seriously thinking about ripping everything out of my case, and buying a Gigabyte GA-EP45-UD3P board.