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Windows 7: Dell XPS RAM not recognized

22 Oct 2010   #1

windows 7
 
 
Dell XPS RAM not recognized

Initially, I had 2gb of RAM in 4 slots, 512 per. I recently upgraded to 4gb of RAM, yet, my machine only recognizes 2gb of RAM.

I have tried F2 and F12, but, there is no provision to set the parameters so it would recognize the entire 4gb of RAM.

Any suggestions as to what I can do? My machine is a Dell XPS 600 running Windows 7.


My System SpecsSystem Spec
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22 Oct 2010   #2

Win 8 Release candidate 8400
 
 

Quote   Quote: Originally Posted by SleazyRider View Post
Initially, I had 2gb of RAM in 4 slots, 512 per. I recently upgraded to 4gb of RAM, yet, my machine only recognizes 2gb of RAM.

I have tried F2 and F12, but, there is no provision to set the parameters so it would recognize the entire 4gb of RAM.

Any suggestions as to what I can do? My machine is a Dell XPS 600 running Windows 7.

How many sticks for the 4 gigs? and where are there in mobo slots?

Are they being used with the old ram?


Ken J
My System SpecsSystem Spec
22 Oct 2010   #3

windows 7
 
 

Each stick is 2gb. And I don't have them side by side; there is a slot between them. BTW, the RAM brand is PNY.
My System SpecsSystem Spec
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22 Oct 2010   #4
Microsoft MVP

W 7 64-bit Ultimate
 
 

Hello SleazyRider, welcome to Seven Forums!



It may be that one of the RAM sticks is bad, it happens quite often.

Download the Memtest ISO and burn it to a CD then boot from that and run 4 or 5 passes on each stick individually to see if you get any errors, if so check that one of the DIMMs isn't bad.

Be sure to post back with any further questions you may have and to keep us informed.


Memtest86+ Free Ram Testing Software
My System SpecsSystem Spec
22 Oct 2010   #5

W7 Professional x64
 
 

What version of windows 7 are you using, and what kind of ram (DDR, DDR2, DDR3) and the speed?
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22 Oct 2010   #6

Win 8 Release candidate 8400
 
 

Quote   Quote: Originally Posted by SleazyRider View Post
Each stick is 2gb. And I don't have them side by side; there is a slot between them. BTW, the RAM brand is PNY.
suggest you run memtest to test it.
Download a copy of Memtest86 and burn the ISO to a CD using Iso Recorder or another ISO burning program. Boot from the CD, and leave it running for at least 5 or 6 passes.


Just remember, any time Memtest reports errors, it can be either bad RAM or a bad motherboard slot. Test the sticks individually, and if you find a good one, test it in all slots.


Also type msconfig in search and to check if the max memory box is checked in the advanced tab. It should be unchecked.

Ken
My System SpecsSystem Spec
22 Oct 2010   #7

windows 7
 
 

Quote   Quote: Originally Posted by LiquidSnak View Post
What version of windows 7 are you using, and what kind of ram (DDR, DDR2, DDR3) and the speed?

Home Premium is the version and the ram is DDR2, 6400, PNY brand.

As for burning a copy of "memtest86", that will have to wait until tomorrow, as I have no CD-r's.
My System SpecsSystem Spec
22 Oct 2010   #8

W7 Professional x64
 
 

You have the wrong RAM. You need DDR2 4300 or 5200.

Also, if you are running any windows 32 bit, the dell manual says that it recognizes only 2GB of ram anyway.
My System SpecsSystem Spec
23 Oct 2010   #9

windows 7
 
 

Quote   Quote: Originally Posted by LiquidSnak View Post
You have the wrong RAM. You need DDR2 4300 or 5200.

Also, if you are running any windows 32 bit, the dell manual says that it recognizes only 2GB of ram anyway.
First off, the Geek Squad, (Best Buy), told me that the 6400 would be fine, as they were out of the 5300, as my machine would only use what it can use, which would be the full amount of the 6400, minus the higher speed. The packaging also says the same thing.

As for the Dell manual stating that my machine would only recognize 2gb of ram, and if it only recognizes 2gb, does that mean that anything above that is not only not recognized, but, not used? Or does it show only 2gb, but, uses more as needed, provided it's installed? And why does the manual state that my machine can handle a max of 8gb if it only recognizes 2gb? A little confused on this.
My System SpecsSystem Spec
23 Oct 2010   #10

W7 Professional x64
 
 

Quote:
Memory

You can increase your computer memory by installing memory modules on the system board.

Your computer supports DDR2 memory. For additional information on the type of memory supported by your computer, see the technical specifications for memory.

DDR2 Memory Overview

DDR2 memory modules should be installed in pairs of matched memory size and speed. If the DDR2 memory modules are not installed in matched pairs, the computer will continue to operate, but with a slight reduction in performance. See the label in the upper-right corner of the module to determine the module's capacity.

NOTE: The module's capacity label can also be seen in the upper-left corner of the module.

NOTE: Always install DDR2 memory modules in the order indicated on the system board.
The recommended memory configurations are:

A pair of matched memory modules installed in DIMM connectors 1 and 2

or

A pair of matched memory modules installed in DIMM connectors 1 and 2 and another matched pair installed in DIMM connectors 3 and 4

NOTICE: Do not install ECC memory modules.
If you install mixed pairs of PC2-4200 (DDR2 533-MHz) and PC2-5300 (DDR2 667-MHz) memory, the modules function at the speed of the slowest module installed.

Be sure to install a single memory module in DIMM connector 1, the connector closest to the processor, before you install modules in the other connectors.


1

matched pair of memory modules in DIMM connectors 3 and 4 (black securing clips)

2

matched pair of modules in DIMM connectors 1 and 2 (white securing clips)

NOTE: Memory purchased from Dell is covered under your computer warranty.
NOTICE: If you remove your original memory modules from the computer during a memory upgrade, keep them separate from any new modules that you may have, even if you purchased the new modules from Dell. If possible, do not pair an original memory module with a new memory module. Otherwise, your computer may not start properly. You should install your original memory modules in pairs either in DIMM connectors 1 and 2 or DIMM connectors 3 and 4.

Addressing Memory Configurations

If using a 32-bit operating system such as Microsoft® Windows® XP, your computer will support a maximum of 2 GB of memory. If you are using a 64-bit operating system, your computer will support a maximum of 8 GB (2-GB DIMMs in each of the four slots) of memory.
I quote directly out of the service manual.

Quote:
Type

533- and 667-MHz DDR2 unbuffered SDRAM

Memory connectors

four

Memory capacities

256 MB, 512 MB, 1 GB, or 2 GB non-ECC

Minimum memory

512 MB

Maximum memory

2 GB or 8 GB
First off, I build computers for a living, and geek squad is a bunch of hacks.
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 Dell XPS RAM not recognized




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