[1_MICHAEL]

I have Vista home premium 64 bit and i just bought an extra 2gb of ram to make my total 4gb (4 x 1gb) of ram. The ram is tested and has no faults. But whenever I have more than 3gb installed at once the computer becomes extremely sluggish and wont connect to the internet. I spent hours googleing this and found no answers so far. A hot fix exists for this (929777) but when I install it it says "This update does not apply to your computer" and quits. I updated my bios, and all the drivers for my video card and sound card. right now I am using 3gb of ram without a problem. memory timings and voltages are all set to auto. The ram is corsair pc5400 (667mhz).

I know there are a lot of other people with the same problem. is there anyway I can fix this without having to buy a new motherboard?

my system:
-vista 64
-nvidia 8800GTS
-SB audigy 4
-core 2 duo e6300
-(mobo) asus P5NSLI


Thank you!!

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There may be an option in the BIOS to fix this. On some boards you have an option to limit the amount of memory for 32-bit OS's, as you have a 64-bit OS this option is irrelevant to you. It's somewhere along the lines of Memory Remapping in the BIOS if your board has such an option.

[Neil Jones]

There may be an option in the BIOS to fix this. On some boards you have an option to limit the amount of memory for 32-bit OS's, as you have a 64-bit OS this option is irrelevant to you. It's somewhere along the lines of Memory Remapping in the BIOS if your board has such an option.

[makinu1der2]

You can try looking here.

http://support.microsoft.com/kb/929605