Vista Ultimate x64 installed only shows 2GB of Ram when I have 4gb

I tried to do a clean install of Vista Ultimate x64 yesterday. When
Vista finally booted to my desktop it only showed 2GB of installed
memory. I checked my BIOS and it said I had 4GB. When I previously had
Vista installed it always showed 4GB but I remember installing Vista the
first time with only 2GB in my computer. Should I re-install Vista
ultimate and then add the other 2GB later?

Any advice would be greatly appreciated.

Thanks,


--
alltheway

- Aaron

ASUS P5ND2-SLI
Intel Pentium D 830 3.0ghz
Corsair XMS PC5400 4GB Dual Channel
EVGA 7800GT x BFG 7800GT SLI
Antec 550w SLI Certified
160 GB WD Vista Ultimate x64
80 GB Hitatchi Windows XP SP2
ACER 22" Widescreen
Logitech 'MX™518 Gaming-Grade Optical Mouse'
(http://www.logitech.com/index.cfm/mice_pointers/mice/devices/187&cl=us,en)

Logitech X-540 5.1

 

Groups.google for the three words 2gb x64 install
in group: microsoft.public.windows.vista.*

You should find a number of success stories of those who did what you are
suggesting. When you find your solution, post back here so there will be
another success story to google.

-Paul Randall

 

What I am going to do is just take out my 2 x 1GB sticks and then
re-install Vista. I think this should solve the problem after reading
other reports on Google. Vista doesn't seem to like machines with 4GB
installed. Gonna remove 2 of the sticks and will report if this seems
to work.


--
alltheway

- Aaron

ASUS P5ND2-SLI
Intel Pentium D 830 3.0ghz
Corsair XMS PC5400 4GB Dual Channel
EVGA 7800GT x BFG 7800GT SLI
Antec 550w SLI Certified
160 GB WD Vista Ultimate x64
80 GB Hitatchi Windows XP SP2
ACER 22" Widescreen
Logitech 'MX™518 Gaming-Grade Optical Mouse'
(http://www.logitech.com/index.cfm/mice_pointers/mice/devices/187&cl=us,en)

Logitech X-540 5.1

 

The following KB article discuses Vista 64 bit 4GB issues.

http://support.microsoft.com/kb/929605/en-us

Are all 4 of your 1GB sticks the same speed from the same vendor?

 

I have 2 x 1GB Mushkin PC53000

My other sticks are Corsair XMS 2 x 1GB PC5400.

When I first installed Vista I only installed it with the Corsair
memory in it. I then later put in my older RAM and when I did it showed
4GB. So what I am going to do is re-install it with the Corsair memory
and then add the Mushkin memory later.


--
alltheway

- Aaron

ASUS P5ND2-SLI
Intel Pentium D 830 3.0ghz
Corsair XMS PC5400 4GB Dual Channel
EVGA 7800GT x BFG 7800GT SLI
Antec 550w SLI Certified
160 GB WD Vista Ultimate x64
80 GB Hitatchi Windows XP SP2
ACER 22" Widescreen
Logitech 'MX™518 Gaming-Grade Optical Mouse'
(http://www.logitech.com/index.cfm/mice_pointers/mice/devices/187&cl=us,en)

Logitech X-540 5.1

 

You need to make sure in your BIOS that all of your installed memory is
running at the same speed since Vista tests the memory speed and will not
use memory running at different speeds like the XP OS would.

 

Im not really sure how to do that...I have look extensively in my BIOS
for that option. I have a ASUS P5ND2 - SLI motherboard.


--
alltheway

- Aaron

ASUS P5ND2-SLI
Intel Pentium D 830 3.0ghz
Corsair XMS PC5400 4GB Dual Channel
EVGA 7800GT x BFG 7800GT SLI
Antec 550w SLI Certified
160 GB WD Vista Ultimate x64
80 GB Hitatchi Windows XP SP2
ACER 22" Widescreen
Logitech 'MX™518 Gaming-Grade Optical Mouse'
(http://www.logitech.com/index.cfm/mice_pointers/mice/devices/187&cl=us,en)

Logitech X-540 5.1

 

Also make sure in the Bios memory remap is enabled for 64 bit. If it is not
you will not see all your ram in vista 64 Bit.

 

Got the problem resolved. What I did is put the slower speed RAM in th
first DIMM slot then put the faster RAM in the second slot. Seems t
work just fine...hopefully soon I will buy another 2 GB of the Corsai
XMS PC5400 667mhz

--
allthewa

- Aaro

ASUS P5ND2-SL
Intel Pentium D 830 3.0gh
Corsair XMS PC5400 4GB Dual Channe
EVGA 7800GT x BFG 7800GT SL
Antec 550w SLI Certifie
160 GB WD Vista Ultimate x6
80 GB Hitatchi Windows XP SP
ACER 22" Widescree
Logitech 'MX™518 Gaming-Grade Optical Mouse
(http://www.logitech.com/index.cfm/mice_pointers/mice/devices/187&cl=us,en

Logitech X-540 5.1