System not recognizing all RAM

[nickolas80]

I have a Shuttle AN35N-Ultra mobo.
I just upgraded my CPU from a XP1600 to a XP 2800. My cpu is also now
333 fsb. In doing so, my memory went from 1gb (using all three slots)
to only the system only showing 768mb.

Any ideas on this?

 

[Michael Hawes]

I have a Shuttle AN35N-Ultra mobo.
I just upgraded my CPU from a XP1600 to a XP 2800. My cpu is also now
333 fsb. In doing so, my memory went from 1gb (using all three slots)
to only the system only showing 768mb.

Any ideas on this?

So! Battery is flat in my crystal ball! What memory is fitted in each
slot? Is it all rated to run at 333? If you slow system to 266 does all the
memory show? While at 133 down;oad and run CPU-Z, it can display the SPD
ratings on each memory module.
Mike.

 

[JAD]

When ever changing major hardware reset the CMOS.