I added 1g of ram to a dell dem 3000, and booted back up and the monitor says it is a power safe mode, what is wrong

The computer can't boot with the new RAM installed. Make sure that it's properly installed in its slot. If it is, and the computer still can't boot, remove the new RAM. It might not be compatible with your computer.Boulder Computer MavenMicrosoft Most Valuable Professional

I took out the new 1g of ram and reinstalled to the original, and still the monitor says power safe mode, the light is amber