Dell M60 only recognizes 1GB of ram; used to see 2GB.

You don't say if the Notebook is 32 or 64 bit.
If its 32 you may have a problem uprating the RAM more than be handled.

This motherboard uses inter-leaved RAM and RAM needs to be installed in pairs.
Check the BIOS RAM settings.
Try and use the same make of RAM.
One of the RAM modules may be faulty.
Try inserting the RAM module that was in slot 3 to slot 1

Sony VAIO VGN-FS 760/W supports PC-3200 400MHz and PC2-4200 533MHz DDR2 RAM
Expandable up to 2GB. Please make sure that both RAM Chips are according to the above specification, compatible with yout system and both sticks are the same (make & bus speed). Try using one RAM at a time and swaping RAM slots to see if the amount of memory is shown correctly. Memory is not recognized only when it is not up to the specifiction. If the RAM sticks are ok, the system shoud recognize them.

Let me know if any further clarification/ assistance is required.
Good Luck!
Hope this helps!
CreativeTECH

"Supports up to 2 GB of system memory with DIMMs utilizing 512 Mbit
technology DRAM devices"-intel

you can use 2 sticks of 1 gig apiece to get to 2 gigs of total memory, but you have to make sure that the ram sticks use "512Mbit " technology.

the 512Mbit technology refers to the arrangement of memory chips on the ram cards. a card which uses 64Mx8 (8 seperate memory chips of 64M apiece) would be appropriate.

"Nearly all motherboards only recognize 1 GB modules if they are low density 64M×8 modules. If high density 128M×4 1 GB modules are used, they most likely will not work."-wikipedia"

some systems require matching pairs, so since you are using mismatched, it may only recognize 1 GB of the 2gb module

You should check with the folks at Dell since whoever wrote their technical manuals for this machine can't do basic math. There are 2 memory slots and each can handle a maximum capacity of 512MB, yet they claim the maximum capacity for the machine is 2GB instead of 1GB. Using 512MB modules would probably work.

Ram should always be paired. Same type, speed and size in each slot. You may have 1 SIMM/DIMM/DDR that has 2 sides of chips and the other with 1 which will do exactly what you state. RAM reads across the chips simultaneously. So if you have a different one in each slot it can go bonkers and do goofy stuff on you.

IF THE SYSTEM SAYS YOU HAVE 1GB RAM THAN YOU HAVE 1 GIG OF RAM, EVEN THOU SOMEONE TOLD YOU YOU HAD 2-512MG=1GB.

HERE IS HOW I SEE WHAT YOU ARE SAYING YOU HAVE 2-DDR-2 1 GIG STICKS THAT MEAN IF 1 IS INSTALLED THAN YOU HAVE 1 GB AND IF YOU COULD GET 2 STICKS WORKING TOGETHER THAN YOU WOULD HAVE 2GB RAM.
1 CHIP SET = 1GB RAM
2 CHIP SET = 2GB RAM

YOU MOTHERBOARD MAY NOT ALLOW THAT MUCH RAM, OR WHAT I MEAN THE BIOS MAKE UP THE AMOUNT OF RAM.

TO RULE OUT ANY BAD CHIP SETS OR GOOD RAM OR BAD RAM.

TAKE THE PEACE OF RAM THAT IS WORKING OUT AND REPLACE IT WITH THE OTHER PEACE AND SEE IF IT WILL RUN.
IF IT WORKS THAN LEAVE THAT ONE IN PLACE AND INSTALL THE SECOND PEACE IN THE SECOND SLOT.
IF BOTH CHIP SET ARE GOOD THAN BOTH SHOULD WORK OKAY TOGETHER.
IF THERE IS A PROBLEM, IT MAYBE SOME DUST IN THE MEMORY LOTS
OR THE SLOT MAYBE DAMAGED.
OR
THE CHIP DESIGN LAYOUT MAYBE THE OPPOSITE SIDE, THIS MAY MEANS THE CHIPS MAY FACE EACH OTHER, OR FACE OUTWARD FROM EACH OTHER.

ROD

hello there do you know if this is dram or sram athat u had and are trying to install

XP prof (SP3) 4G mem limmit
(3.2G adressable)

Upgrade to x64 edition of Windows which can support more than 4 GB of memory.





Az.