Windows 7 won't detect 2GB RAM

Amd Athlon ii x2 dual core processor
October 31, 2009 at 08:39:15
Specs: Windows 7, 4GB
I have put in DRR2 2GB + 2GB of RAM into my computer ram slots and Windows 7 is not detecting Slot A0. It's only detecting Slot A1, please help?

Slot 'A0' is Empty
Slot 'A1' has 2048 MB

Windows 7 Professional (64bit)
Channels: Single

Processor
2.20 gigahertz AMD Athlon 64 X2 Dual Core Processor 4200+
256 kilobyte primary memory cache
1024 kilobyte secondary memory cache

Main Circuit Board
Board: NF-MCP61
Bus Clock: 201 megahertz
BIOS: Phoenix Technologies, LTD 6.00 PG 10/23/2007


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#1
October 31, 2009 at 08:41:20
how do you expect to detect "A0", when it`s empty ?

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#2
October 31, 2009 at 08:44:03
It's not empty. I've put 2GB RAM in. Windows is not detecting slot 0 of ram for some reason?

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#3
October 31, 2009 at 08:57:10
Slot 'A0' is Empty
Slot 'A1' has 2048 MB

you say "A0" is empty


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Related Solutions

#4
October 31, 2009 at 09:02:35
I have put 2GB X 2 into the ram slots. I want AO to show 2048 but it's not detecting it.

I want 4GB to be showing/displaying not 2GB.

When I go to Control Panel > System in Windows 7 it's showing that I have 2GB of installed RAM but it should be 4GB of ram.


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#5
October 31, 2009 at 09:08:00
um...do you have that problem with other Operating Systems ?

...and...check the amount of RAM recognized in the BIOS

reseat the modules if necessary


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#6
October 31, 2009 at 09:08:56
Maximum Memory Capacity: 8192MB
Currently Installed Memory: 2GB
Available Memory Slots: 1
Total Memory Slots: 2
Dual Channel Support: Yes
CPU Manufacturer: AuthenticAMD
CPU Family: AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ Model 11, Stepping 2
CPU Speed: 2200 MHz


Currently installed memory:
Showing EMPTY - should be showing 2GB not empty?
2GB - Works fine!

Each memory slot can hold DDR2 PC2-6400,DDR2 PC2-5300 with a maximum of 2GB per slot.*


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#7
October 31, 2009 at 09:11:06
1 stick of RAM is NOT recognized

reseat the RAM...

if not solved, you may experience RAM issues


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#8
October 31, 2009 at 11:46:17
Posting the make/model of the motherboard would be helpful, all you posted was the chipset model (MCP61).

Did you try other memory slots? Did you read the manual to see which two slots should be used to enable dual channel mode? Did you manually configure the memory settings in the BIOS - especially voltage?


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#9
October 31, 2009 at 12:46:07
Motherboard

Model: NF-MCP61
Chipset: NVIDIA MCP61
Southbridge NVIDIA MCP61
LPCIO: ITE
Bus Clock: 201 meghertz

BIOS: Phoneix Technologies LTD
6.00 PG
10/23/2007

PCI-Express
Link Width: x8 - Max: x16

DDR2
Module Size: 2048 MB
Max Bandwidth: PC2-6400 (400 MHz)
Kingston

There's only 2 memory slots and how do you manually configure the memory settings in the BIOS ? in Windows 7!

How do you enable dual channel mode? I've not ever done this before!


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#10
October 31, 2009 at 12:49:18
BIOS should activate it...however, you can take a look there...

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#11
October 31, 2009 at 12:51:24
Steps please?

I have no idea what I'm doing. Thanks!


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#12
October 31, 2009 at 13:00:38
no steps...

just...do the following:

1. Make sure you have sticks of the same color, brand, size, chips, bandwidth...
2. When the system boots ( on the power self test ), make sure it says "Dual" and NOT single channel


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#13
October 31, 2009 at 13:19:07
It says Single Channel

The sticks are the same.

What next?


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#14
October 31, 2009 at 13:54:01
next...contact your manufacturer...that`s my opinion

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#15
October 31, 2009 at 17:31:14
I don't know where you're getting the motherboard info from but it's obvious you didn't read it off the board. NF-MCP61 is the chipset! You had to open the case to install the RAM, right? Open it again & find the model number on the board. While you've got it open, try swapping the memory sticks around, then see which stick is recognized - A0, A1, both or neither.

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#16
November 1, 2009 at 03:21:36
Slot 'A1' has 2048 MB

Slot 'A0' is Empty

I'm getting the motherboard info from CPU-Z


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#17
November 1, 2009 at 06:47:39
"I'm getting the motherboard info from CPU-Z"

And all it's doing is identifying the chipset. Open the frigging case & find the model number on the board.

"Slot 'A1' has 2048 MB
Slot 'A0' is Empty"

Did you try swapping them around? You have to determine if the RAM itself is bad or the RAM slot. Try just one stick in A1, then try the same stick in A0. If it works in one slot but not the other, the slot is probably bad. Try the other stick...if it also works in A1 but not A0, you've found your problem...A0 is bad. If the 2nd stick isn't recognized in either slot, the stick itself is bad.

It ain't rocket science.....


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#18
November 1, 2009 at 07:34:08
I have put both RAM sticks in Slot A1 one at a time and it worked fine. When doing it with Slot A0 with both sticks it does not work and when starting up with A0 Windows 7 makes beep sounds.

A0 is bad = Bad RAM slot.

RAM sticks work fine. What do you recommend I should do?


The motherboard disk doesn't work with Windows 7. When I start up windows it still says Single Channel.

* Windows 7 Professional
* 64-BIT
* GeForce6100SM-M2
* AMD Athlon (TM) 64 x2 Dual-Core / Athlon (TM) 64 / Sempron (TM) processors
* DDR2 800/667/533/400 DDR SDRAM with * Dual Channel supported
* Two unbuffered DIMMs
* Up to 8 GB per DIM with Max memory size up to 16 GB


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#19
November 1, 2009 at 08:15:51
"When I start up windows it still says Single Channel"

You can't run dual channel mode when just a single stick is being recognized. Dual = two.


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#20
November 1, 2009 at 08:25:33
Even with 2 ram sticks inside one works with 2GB in Slot A1 and the other slot A0 is not working with 2GB. Still says Single Channel but it says this in my manual: DDR2 800/667/533/400 DDR SDRAM with * Dual Channel supported

What is going on and how do I fix this?

The motherboard drivers that came with do not work with Windows 7. Is that the problem? The drivers worked fine with Windows XP.


Motherboard fault with RAM slot? How do I go about this?



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#21
November 1, 2009 at 09:35:28
...if the ram slot is bad...NO FIX

if your computer is under warranty, go to the place you bought it from


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#22
November 1, 2009 at 09:38:03
Like I said, it aint rocket science. Dual = two. Since only one stick of RAM is being recognized, your system will run single channel. Single = one.

Drivers are used by opertaing system, not the motherboard/BIOS. You have a hardware problem, not a software problem. Replace the motherboard...it's outdated anyway.


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#23
November 1, 2009 at 09:39:50
...you heard him...motherboard replace seems to be THE ONLY solution...

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#24
November 1, 2009 at 11:53:37
At least you finally posted the correct model number. It's an older AM2 board based on the even older Geforce6100/nForce405 chipset combo which was designed for S939 CPUs. And it doesn't get good reviews:

http://www.newegg.com/Product/Produ...

If you haven't already done so, I would suggest you try updating the BIOS...you have nothing to lose:

http://www.ecsusa.com/ECSWebSite/Pr...

Also, look into the warranty. You *may* be able to get the board replaced for free.

http://www.ecsusa.com/ECSWebSite/Su...

Here's a few upgrade possibilities:

http://www.newegg.com/Product/Produ...

http://www.newegg.com/Product/Produ...

http://www.newegg.com/Product/Produ...


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#25
November 1, 2009 at 12:41:32
In addition to all the good info above you should use an online memory configurator. Go to crucial.com and try theirs. BTW, you could have something stopping the memory module from fully locking in place. Are you using onboard video or an add in card?

Were you using BOTH RAM slots before installing the current sticks?

Did you have the computer unplugged while mucking around in there?


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