I bought 1600 which I know now I wasn't suppose to buy. I need 1333 for my DH55HC Board. I use the 1600 ram for a while then realized that it was wrong. I plan to return it to newegg.com but after reinstalling the old ram my computer won't restart. Not to mention how my computer wouldn't restart with the 1600 ddr3 ram. The only way I can start it is to clear the cmos by removing the battery and pulling the power to the computer. That the only way I could get here to do this. I'm returning the ram and getting 1333 ram soon, but my pc keep messing up every time I start it. What do I do? I hope 16 gigs of 1333 will fix it if nothing else.