For starters, go through the troubleshooting sticky, you may find that you didn't connect something properly. The link in my signature will take you to the troubleshooting guide.
As for the beep codes, try this link: http://www.pchell.com/hardware/beepcodes.shtml
You'll find an explanation of what the series of beeps mean.
Lastly, download MemTest86+ from memtest.org, burn the iso to disc, run the test overnight, and come back with the results.