Hello people. I am trying to repair a PowerMac G5 with the following specs: http://goo.gl/Y8uZjS I replaced the hard drive with no problems but i receive three blinking flashes on the front LED which means that the RAM is incompatible. Strangely enough the RAM modules are the ones preinstalled. I tried different modules but in most situations it doesn't boot. Any suggestions? Could it be the memory banks? Is there a way to bypass the first slots and try seconds and thirds? Thanks.