OK, Great. That means the motherboard is doing as it should. I do not believe it is the motherboard as it will run XP. If the board will run 1 OS, it should run any OS. Put the 2 older sticks back in in 2 of the same color slots. Your manual says any 2 slots but the same color for dual channel, which is what you want. Unplug the power and wait for the capacitors to drain. You will notice the LEDs go off. There is a small silver CMOS battery on the motherboard that is simple to remove. Notice the orientation of it. Remove it from the board and leave it out for 20 minutes or so. Then replace it in the same orientation it is now. This will completely reset your bios. It will 'forget' everything in it, including the date and time as well as how it is set up. Remember what sata mode your bios is in now. When it first boots up, enter bios straight away, and set optimized defaults and confirm it. Check your sata mode and make sure it is set to what it is now, then set your boot order, DVD first and hard drive second. Put the Memtest86+ CD in the drive. if you know hat your ram timings are, set the by what the sticks say as well as the dram voltage. If you don't know, leave that alone. Save and exit, memtest86+ should start. If you don't have it or don't remember, I'll post the instructions here for you. Also, please notice when you run memtest, it will tell you how much ram it detects, the frequency, timings and voltages, as well as your CPU frequency. Please remember or write that down and let me know what it says.
Please Run Memtest86+
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Please download from this site
http://www.memtest.org/ in the middle of the page are the Download links, you can download the ISO.zip or the Auto USB Flash Drive installer.zip
Extract the Zip file. If you chose the ISO image, burn it to a CD using Windows Disk Image Burner or any Image burner you mat have. If you downloaded the Auto USB installer, extract it, insert your USB 2.0 Flash Drive and take note of the drive letter. Run the installer, select the Flash Drive Letter, check the format box and press next. It will install memtest86+ to a flash drive. You can use either V4.20 or V5.01. Boot from your selected media. If you use V5.01 it will tell you to press certain buttons at the start, please press no buttons. The test will begin on it's own and continue to run until you stop it. It needs to run for 8 complete passes or until you receive an error. If you receive an error, stop the test. Even 1 error is a fail. Each pass tests a different part of the ram and each of the 10 tests in each pass tests something different. It takes a minimum of 8 passes to completely test the ram, more passes are better. It is quite a long test and will take several hours depending on how much ram you have. Due to the time length it is best to run overnight. If you have any questions, please do not hesitate to ask
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