|That normally means general system board failure. The CPU / RAM are tied closely with that though. I would suggest like Derek suggested, to remove the RAM and clean it, then reseat it carefully and attempt to get it to boot. |
The new memory should work with your system, was there a tough time getting it in? Any force applied to get the ram in place?
You may want to try a hard reset to see if you can get it to show anything:
Disconnect all peripheral devices and remove all USB devices and media cards.
Disconnect the AC power adapter, remove the battery, and then press and hold the power button for at least 15 seconds .
Reconnect the AC power adapter (but do not connect the battery), Press the Power button. Does it display anything now?