Motherboard not recognizing RAM

did u check the old RAM...do they also show only half ?
may be ur new RAMs are not compatible with ur MB
what's the speed of ur new RAMs....400 or 533 ?

Hi,
I am assuming that your question is how to access the bios for your pc. The most common bios entry is to hit the DEL button after switching on. If this does not work, try F2 or F1 buttons after switching on.
Other than these, I am unaware of any other methods for entering the BIOS.
Best wishes,
Graemevm

There are probably cables coming from the front of the computer. On the motherboard, you will see 2 or more groups of pins where these cables go. Unfortunately, sometimes the cables don't have a single plug, but have one plug that has 3 holes and then 1 that has one. Many times, too, there are 2 sets. So--let's see if this helps:
The pins will be labled something like USB and then several numbers.
The pins look like this ::::. (hope that shows up OK)
If your usb cable end has one large (3-hole) plug and one small, the large one goes over the first 3 pins from left to right. The one on the left is labeled VCC. The separate plug goes on the 4th pin.
You can use the top row of pins or the bottom. Nothing goes on pin #5 on the bottom.
Does this help? If so, rate it accordingly, please.

I had similar problem with CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory

If this is your RAM:
Corsair 1024MB Value Select PC2-4200 (533MHz) DDR2 RAM, 128Mx64non-ECC, 240-pin DIMM, Unbuffered, CL4, Lifetime warranty (VS1GB533D2) Then it is high density. You need low density to work, look for one ending with an 8, not 64.

Windows xp will usually only see 3.5 gbs of ram even in your motherboard can support more. WIndowns vista does recognize more RAM or i also believe windows xp 64bit recognizes more ram. Nothing wrong with ram or your computer its just your operating system.

No it supports DDR ram (up to two GBs pc2700) not DDR2

That's a pretty big jumb from 667 to 800MHz. (Motherboard does not support 800MHz).
Manual says:
This motherboard accommodates two memory modules. It can support two 240-pin
DDR2 667/533/400. The total memory capacity is 2 GB.

Yet, ECS web site says it supports up to 4 GB.
http://www.ecs.com.tw/ECSWebSite/Products/ProductsDetail.aspx?detailid=830&CategoryID=1&DetailName=Feature&MenuID=44&LanID=0

BIOS for 945GCT-M/1333 (PCB:3.x) version 08/07/18 does not include information pertaining to increased memory speed up to 800MHz. (Bios link).
http://www.ecs.com.tw/ECSWebSite/Products/ProductsDetail.aspx?detailid=830&CategoryID=1&DetailName=Bios&MenuID=44&LanID=0

Mike

This is only a stab in the dark but are all your M/board fixing connected correctly
Hard drive etc.
One other way is to disconnect everything from M/board except for Video and memory and try to boot up if it does then connect hard drive etc one at a time rebooting each time until it will not boot that is the wrongly connected one

probably your motherboard does not recognise the faster ram go to BIOS setup and check ram is set for auto

You might try to find a PCI IDE Card. That card should provide support for 2 or 4 drive. SASI (sp?, called sassi or scuzi at times) requires replacing the drives you have with scuzi drives.
Be sure it's a PCI IDE (EIDE) Card.