If there's no beeps, nothing, it just got worse. You may have damaged something. Make sure the RAM is fully seated and 'clicked' into place.
If all else fails, take out CMOS battery, unplug everything attached to the outside of the computer (mice, monitor, speakers, power, etc) and press and hold the power button for 60 seconds, put CMOS battery back in, plug stuff back in and turn it on.