V120 Fails Core Memory Test

I have a V120 which will not get past the Core Memory Test. I have tried installing a different 256MB DIMM card into all 4 slots to no avail. The system recognizes when and in which slot the card is installed, but I am getting the same error message.

Any recomendations would be appreciated.

Thanks

[318 byte] By [Jman972] at [2007-11-26 9:36:28]