Your RAM might still working
When your computer wont boot and you've done process of elimination confirming that the RAM is the culprit, mostly you might think of replacing the RAM. Before you throw away your RAM, you might want to try this troubleshooting first in this article. There is also the possibility that your motherboard's RAM socket is already loose, specially if it is already old. The motherboard's RAM socket contact pins might not all touching the RAM's golden finger.