Vista 64 cant detect 4GB of ram?

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Xenozx

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Jun 16, 2004
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OK, so I just did a complete reinstall of vista business, this time in the X64 edition up from 32. Installed SP1, everything looked great. At first it showed 4GB total of ram. Never seen it before, so I was happy as can be. Installed my normal programs and a few games, and somewhere along the line I lost 1.5 GB of ram again, just like when I was on vista 32....

What caused this? How do I get my 1.5 GB back? It is vista X64, I thought that meant it could addresss up to 32GB, so why is it cutting my ram?

I have a 4870x2 and 4 GB of ram, taht should = 6GB total for memory mapping. Any ideas?

wtf111.jpg
 
it shows 4gb ram though and video ram doesn't show there,it should show under video
 
if you look at the task manager picture. 2 hours ago where it says

Physical Memory (MB)
Total 2557


It had said 4063

Why did it drop from 4063 to 2557? My vista sidebar gadget that shows ram also dropped from 4063 to 2557.... This is exactly what happend on vista 32, and is the main reason I upgraded to vista 64....... I was told this should NOT happen :'(
 
Now it's showing 2.5GB of RAM under PerfMon.

Untitled.jpg


On mine is shows 3.5GB... which is what it should, due to shared video on my laptop..


No this should be showing you your 4GB of RAM, video this or that has nothing to do with it. I'm not sure why its doing this, but I'm sure someone here might have an ideo.
 
thanks, ya i really hope this can be fixed. I mean, since I am on vista 64, I dont need to worry about any memory hole option in the bios right? cause 64 bit doesnt need that cause its 64 bit and not 32. Or does that still need to be on for the board to tell windows theres more then 2GB? Also why did it show as 4 earlier, but now its 2.5?
 
mine actually shows 4093,really don't know what's going on with yours
why not try a reinstall and see if it still persist?
 
:( dont wanna reinstall.... I will as a last resort, but I already reinstalled all my programs, SP1, games, etc. It would take another good 5 hours to do it again.
 
Try this:

Start > MSCONFIG > enter > BOOT > Advanced Options

Make sure that Maximum Memory isn't checked. If it is, uncheck it and reboot.


(I can't verify that, by the way. It's just something I've seen reported as a solution for the behaviour you are reporting.)
 
Catweazle said:
Try this:

Start > MSCONFIG > enter > BOOT > Advanced Options

Make sure that Maximum Memory isn't checked. If it is, uncheck it and reboot.


(I can't verify that, by the way. It's just something I've seen reported as a solution for the behaviour you are reporting.)
Click to expand...

Worked like a charm. I guess this is how I caused the issue in the first place. I always go into there and set boot to 4 cores, and the max memory (when I set it it was 4093), but I guess some how some way it didnt take. cause I just went in there, and it was still at 4 cores, but the check box with the memory was checked, but had a 0 in the box. I unchecked, rebooted, and boom, now I have my 4 GB again!

Thanks man, Now i can go to sleep lol
 
heh heh...

No need to thank me. Just my google skillz and some random dudes on some random forum.

Glad it worked.

:D
 
Xenozx said:
Worked like a charm. I guess this is how I caused the issue in the first place. I always go into there and set boot to 4 cores
Click to expand...

Just FYI, doing this is normally for diagnostic purposes only. It is not needed, Vista will automatically use all the cores anyway.
 
Xenozx said:
I always go into there and set boot to 4 cores, and the max memory (when I set it it was 4093),
Click to expand...
I know this is getting extremely redundant, but the best thing to do with Vista is leave it alone. Those "tweaks" will have no positive effect on your system, so set them back to the defaults and leave them alone.
 
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