Vista x64 Memory issues

[opal]

Hi all, just wondering if I can get some advice on a little issue I am having.

I recently built a new pc, after an issue with a faulty PSU it was all up and running!

Now up until a week or so ago, my system was reporting 4gb of RAM across all the boards and everything was fine. One boot-up my task-manager started reporting only 3070mb of RAM along with the sidebar CPU add-on I have. I thought this was odd so I checked BIOS, System info and CPUZ, which all still report 4gb, so its not a problem with the RAM itself.

Just wondering if anyone has any ideas on this issue, I have run a diagnostic tool and there was nothing to report on the memory and I have 64bit so it should be utilising all the memory available. Memory mapping is enabled in the BIOS.

Now I don't know if this was an issue with SP1 as I can't remember when this problem surfaced so not sure if it's directly related to the update. I noticed it about a week ago (I know beforehand it was showing all the memory).

System specs are as follows:

Intel Core 2 Duo E8400 LGA775 'Wolfdale' 3.00GHz (1333FS at 3.6ghz

Corsair 4GB DDR2 XMS2 Dominator PC2-8500C5 TwinX (2x2G

HIS ATI Radeon HD 3870 X2 1024MB GDDR3

Asus Maximus Formula Intel X38

Any more info you need let me know. Appreciate any help

[SuB]

isn't this the thing where you have to turn OFF memory mapping? since you have 64bit and 4gb?

(i could be wrong)

[Rastalovich]

There is something silly u have to do I`m sure.

I have heard of a KB for something similar to this - cept u have SP1 on there so I figured u wouldn`t need it.

http://support.microsoft.com/kb/929605/en-us is what I`m thinking of.

Chances are theres a chipset driver that`s screwed after SP1 is installed or something, if ur mobo is reported as fine.

[opal]

I'll reset the CMOS again tonight and boot once again with default settings.

As you said could be a silly little thing that has switched causing the problem.

I'll let you know if it helps or if I can figure out what is causing it

[mrapoc]

I had to turn on memory remapping for it to work on my 64bit. Ensure ramdisk and stuff like that arent enabled

[MsTBSoX]

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