CPU ADRESS ERROR ANYONE CAN HELP ME ?

Hello to everyone, I have a problem with my mpc1000, jj OS 4.99
buy about three month ago, second hand.

After use it about 1/2 hours, tha mpc crash, saying CPU ADRESS ERROR and go to boot block after restart, but it stop and do nothing. I have change three Ram, with the exactly parameters you have post in this forum, Samnsung, Kingston and Akai, but the problem is the same. With no RAm expanded, so with 16 MB, no problem.
I have reinstalled and Upgrade OS, but It is the same.
Anyone has same problem?
I'm thinkin' of change motherboard, because this trouble make me crazy...
i would like to know if someone has the same problem or an hint for me.
Thank you boys.

Nudir

Are you sure you're pushing the RAM all the way in? are the contacts for the RAM dirty??

good luck

Yes, I have check the contact and the Ram, nothing seem damaged..

uhmmm... did u try with an other os?