Thanks for the pointer to memtest86. I downloaded a copy after findi= ng it=20 at freshmeat.net, burned it to CDROM and booted the system in question fr= om=20 the CDROM. The problem follows the smaller (128M) RAM stick but the failure onl= y=20 shows up when both sticks are present: tested one-at-a-time, everything w= orks=20 but with both present, the failure shows up in the address range of the=20 smaller stick. Wierd, but conclusive enough for me. Thanks for the solution! On Sunday 22 June 2003 16:02, Deepak Saxena wrote: > On Jun 22 2003, at 15:55, Ed Skinner was caught saying: > > Hmmm, > > I have a x86 motherboard (Giga-byte GA-7VKMLS, in another Walmar= t > > 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 si= zes > > 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 > > Run memtest86 on the RAM. It's possible that something is wrong with > the low-address range stick B and it's only getting hit during POST. > > ~Deepak --=20 Ed Skinner, ed@flat5.net, http://www.flat5.net/