Sounds like B stick has an intermittent bug.
Bob Eaton

Ed Skinner wrote:

>Hmmm,
>     I have a x86 motherboard (Giga-byte GA-7VKMLS, in another Walmart box) 
>that doesn't seem to mind two differently sized RAM sticks in A/B order but 
>becomes intermittent (POST doesn't start 50% of the time at power on) when in 
>B/A order. That is, if I swap the sticks, it works, and if I swap them back, 
>it is intermittent. The MOBO book says mixing sizes is Okay but obviously 
>something is going on.
>     The two sticks are marked:
>Value RAM, KVR-PC133/256, 3.3v, Kingston
>Value RAM, KVR133x64c3/128, 3.3v, Kingston
>     Anyone recognize if I'm doing a No-No
>     TIA
>
>  
>