Weekend build begins--Lots 'o' pics
I've had a similar RAM experience once. Got a couple sticks for a laptop that were from Crucial (they never failed me before). Well, when I put either one or both in, it wouldn't boot. I had to put one of the original sticks in one slot & a new stick in another slot for it to detect it. Then the laptop was fine with the second stick booting.

Jeesh this chip just wont quit. Still at 1.25 v
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<b><a href=http://www.heatware.com/eval.php?id=2322>Heatware Evals</a></b>
Core I7 920 @ 4.0GHZ| Asus P6T Deluxe V2 |2x WD 640gb RAID 0--2x WD 1TB| Philips 20x SATA DVD | 12 gigs Corsair XMS | SB Audigy2 Fatality | GeForce GTX 260 Core Edition | Thermaltake 700w PSU |Antec 900 Case | 6mb DSL |
<b><a href=http://www.heatware.com/eval.php?id=2322>Heatware Evals</a></b>
Core I7 920 @ 4.0GHZ| Asus P6T Deluxe V2 |2x WD 640gb RAID 0--2x WD 1TB| Philips 20x SATA DVD | 12 gigs Corsair XMS | SB Audigy2 Fatality | GeForce GTX 260 Core Edition | Thermaltake 700w PSU |Antec 900 Case | 6mb DSL |
Awesome Build
I'll take 2!
<a href="http://www.heatware.com/eval.php?id=123" target="_blank" >Heatware</a>