Different RAM and now won't boot..

[HaVoKZoR]

I am doing a build for my friend from some of my old spare parts and have come across a problem, I am using my old MSI motherboard : P67A-GD65 and it says its compatible with "DDR3 1066/1333/1600*/2133*(OC)".
I was running G.skill in it before but I kept that in my system and we ordered some off eBay for his. I have tried 2 lots now, one is Samsung PC3-10600, 1333MHz and the other was stuff I had spare which was PC3-8500, 1066MHz.
Now when I turn on the power I get 3 beeps signalling RAM, no matter where I place it I get the same error. I tried one of my G.skill's and it was fine. (I think they are PC3-12800, 1600MHz).
I have been assured the RAM I purchased was not faulty, so does anyone have any ideas for me?

 

[faalin]

You need to reset the bios, the bios is still set up for your g.skill ram and it doesn't like the new ram timings. Push the clear cmos button on the back panel of the motherboard. Put the Samsung sticks in and boot up the pc, it should load a default ram setting that will allow the computer to boot up. Then once in the bios go in a set the XMP profile or manually set the speed and timings for the sticks.

 

[HaVoKZoR]

Thank you for the quick reply!

UPDATE* Okay I have tried each slot and combination with the Samsung RAM but I still get the beeps. I have tried the clear CMOS button and also popping the battery out for 15 mins but still get the beeps and no start up.
The G.Skill RAM still works and will allow the system to boot (regardless of where I place it) so it cant be the actual slots faulty.
I don't understand what the problem is because the Samsung sticks are slower so surely they are supported?!
I am able to boot up using my G.skill stick/s so is there anything I can do via boot-up to try and sort the issue? I know you can clear CMOS in the BIOS but considering I have done 2 variations of that I don't think it would do anything.

 

[HaVoKZoR]

Also, the Samsung is 2 sticks so if needed for some reason I could install the G.skill with the Samsung (providing it will boot) if any tests need to be carried out.

 

[faalin]

try this first, unplug the power cord and then hold the power button down on the computer for 10 seconds to drain any power in the system. then press the clear cmos button, next remove the little button battery for the cmos for 10 - 30 second.

While the battery is out install the Samsung ram if its not already installed, then just reverse the steps. Put the battery back in, press the cmos button, and plug the power cable back in. try booting up and see what happens.

your last move would be to put the g.skill ram back in and manually set the speed and timings to the Samsung ram, do a save and restart. make sure the computer boots up, then shut down and replace the g.skill with the Samsung ram and see if it will boot up that way.