Mobo, Dont Like Ram Help!!!!

[Spyder]

ok i got this odd thing i have like 1gb 2x512 kingston pc3200 ddr ram right and a MSI K7N2 Delta mobo.... for some reason i dont think it likes the ram or maybe i have done something wrong anyway i install the ram in the computer just the 2chips there is no other ram in it and for some reason it works fine for about 30-40 mins but on a load.. even like counter-strike it just restarts ill be playing then my computer just restarts.. i tryed the ram on my other computer works fine no restart no nothing. so then i put 1 stick of 512 works fine no restart no, nothing works super but if i put 2 it restarts, if i only put 1 stick of ram it does not matter which one they both work well, so the ram looks fine.. any one know of maybe a bios setting i have to turn off like shadowing, cacheing or something like that
heres the stats on this computer

AMD 3200+ XP
MSI K7N2 DELTA MOBO
G4 TI 4800
1GB KINGSTON VALUE RAM PC3200 DDR
MAXTOR 160 GB HD
SOUNDBLASTER LIVE EX PLAT

any ideas??

 

[Spyder]

oh yea it only works if i put one in the duel channle slot of the mobo so if i put 1 one of the 512 sticks is has to be in the dule channle slot... but the other slots work fine because i put like some older ram i had to check maybe if i pluged it into hard or something to mess up the slot, but i pluged in a 128mb stick of old ram i had and it works fine no matter which slot... so i dont know