I had two out of four modules fail on my Dell XPS recently. It gave me some weird beeps. Replaced them to fix it. Just make sure you get the exact type of memory that is compatible with your motherboard or it won't boot.

Check out Silas. www.kartsilas.com

Hear my band Finding Fire - www.myspace.com/findingfire

Daily dev updates - http://kartsilas.blogspot.com/