PC NOT RECOGNIZING NEW RAM

I just replaced my 4 gigs of Patriot Viper (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) with 8 gigs (4 x 2GB) of G.SKILL PI Black 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) on a EVGA 132-CK-NF78-TR LGA 775 NVIDIA nForce 780i SLI ATX Intel Motherboard which according to specs, holds 8 gigs. I am currently running Windows XP.

The reasons I did this are:

1. While running a memory-intensive flight sim, I was getting errors that led me to believe that some of my memory addresses were bad.

2. My system indicated that it was only recognizing 2.75 of 4 gigs which also led me to believe the RAM was going bad.

3. I wanted better performance.

Unfortunately, after the replacements arrived, my system still indicates that it only recognizes 2.75 gigs. Please don't tell me that I need a new motherboard because the slots have gone bad. :(
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  1. First of all, unless you have XP 64 bit, you wasted your money. XP 32 bit has a 4GB memory cap, and that includes graphics memory. So the most it will be able to see is ~3.25GB of RAM anyway.

    Check to see if there is a BIOS update for that motherboard.
  2. That looks like the issue. Guess I'll have to upgrade. Many thanks!
  3. You're welcome.
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