So I was tweaking RAM timings in my BIOS when, upon restart, the machine refused to post. Not an uncommon occurrence when I've tightened things up too much; so, as usual, turn off the machine and clear the CMOS with the jumper on the motherboard, then power up and expect to be greeted by BIOS defaults for another round of tweaking. Nope. Machine wont even post now. I've dropped out the CMOS battery, left the jumper on Clear for a few hours while having the machine unplugged, tried running with only one DIMM in and in alternating banks. Wont post. Any work around or am I RMA'ing?