Does Gigabyte GA-945P-S3 support 2 gb of ram

Only the Gigabyte GA-945P-S3 revision 3.3 does allow C2D E8400 or C2D E7500.
However the C2D E8400 only by overclocking, which certainly is not recommended.

So the Gigabyte GA-945P-S3 mainboard revision 3.3, should work with the C2D E7500
with BIOS version FFd and FSB setting at 1066 MHz.

Here is your answer: http://www.microsoft.com/windows/compatibility/windows-7/en-us/default.aspx

Look up your motherboard in the hardware section and you will have the answer.

the long beep indicates faulty ram oir graphics card, i would say ram, you also need to reset the bios, via the cmos jumper or battery, continuous long beep is a dram error, so the ram is faulty, get some new ram and make sure its specs match the computer

Hi,
This is because you are running 32 bit system. 32 bit system can only use up to 4GB RAM theoritically but some only 3.5 GB RAM.
Only 64 bit systems can use 4GB RAM and more.

Hello

That's normal condition. Probably your RAM shares it's capacity with internal video card (which uses the whole 256MB)

More info can be found on Wikipedia:
http://en.wikipedia.org/wiki/Shared_Memory_Architecture

1. 4 DDR II DIMM memory slots (supports up to 4GB memory)
2. Supports 1.8V DDR II DIMM
2. Supports dual channel DDR II 667/533/400 DIMM

Using the manual for the Gigabyte GA-945P-S3 MB. Go to page 71 & you'll see bios beep codes for your board: AWARD BIOS Beep Codes 1 short: System boots successfully 2 short: CMOS setting error 1 long 1 short: DRAM or M/B error 1 long 2 short: Monitor or display card error 1 long 3 short: Keyboard error 1 long 9 short: BIOS ROM error Continuous long beeps: DRAM error Continuous short beeps: Power error As you can see there isn't a code for three short beeps. When you boot your system try to pause your boot up screen. See if the bios is reporting the correct total of memory in your system. Bios codes from the link below. http://www.computerhope.com/beep.htm#05 3 beeps for the AMI bios code reports Base 64K RAM failure. You can test your memory. Go to memtest.org Scroll down the site to just under the three screen shots. Download Memtest86+ V2.11 You have a choice in making a bootable floppy disk or a bootable CD-ROM disk. Once completed you boot your system to the testing program. Memtest will check your system memory. This should help. Thanks for using FixYa! Mike

Hi there. How many beeps are there and are they long or short?

You can download the driver from the following link :
http://www.gigabyte.com.tw/Support/Motherboard/Driver_Model.aspx?ProductID=2324

I hope this will solve your issue.

Good Luck!

If my solution proves useful please accept it.

Regards
Arjun

Here(the site link below) but you will need the revision number from the board. 1 or 2 or 3.3     Good hunting. 

http://www.gigabyte.com.tw/Support/Motherboard/Driver_List.aspx?Keyword=GA-945P-S3