huh, i had a set do that to me a few weeks ago @ work...havent gotten around to get them home to memtest them, but tried on 2 diff comps and none will boot with this mem. (1x stick, all diff slots, etc etc)

3200/4400 with 0437's

ive E mailed G-Skill RMA 2x now and never got any response...
sorta gave up since this is a "company expense"

GOOD LUCK

PS will take home TODAY and post in a few hours how memTest goes