Have a look at your voltage settings in your BIOS, check your MoBo documentation for the correct settings and clock speeds or check your memory manufacturers web site etc. If you have memory from a "second rate" company you prob wont find the info you need so check out www.crucial.com if needs be. Thay are prob the best around. I dont think the problem lies with your memory but you never know, stranger things have happened!
Good luck.