Originally posted by Madison:
Just updated my father-in-laws' PowerMac 6500/250 from 8.6 to 9.0.4, and now it only recognizes 64mb instead of the 128mb that was there, anyone have any ideas why? The memory has been in for two years and working flawlessly until now...this sucks because the unit was barely usable before, now it's even less so. Any help would be great...thanks.
Here's some advice I picked up from another forum. Some of the the ideas might be some help to you before you buy new memory.
First, try holding the option+command keys down and open your memory control
panel. You should see a radio button for disabling the memory test at
startup ... this affects nothing else, just doesn't allow the rom to test
the memory for problems before booting.
Also, if you have added components lately, esp ram, look for the CUDA button
on the motherboard (it's a red button I think-could be black, usually buried somewhere on the
motherboard near memory chips). Unplug your computer, take out the battery & let it sit for
about 10 minutes (to allow any electricity/static build-up to discharge)
Touch a metal piece on the case & push & hold the CUDA button a few times.
That will reset all the parameters of the computer & help it recognize any
new components as "native".
Change your battery (unless you bought/installed it less than a year ago).
Check to be certain all your ram is seated properly.