Hi, i have an Asus p5gvmx motherboard with a 512 ram.is it possible to add another 2 gig ram on my motherboard?do i need to upgrade my power supply for it to work and will my pc work stable?please help.,,^_^

Your Motherboard will support:

2 x 240-pin DIMM's (4GB Max)
Unbuffered
non-ECC
667/533/400 MHz DDR2

You should be pretty safe with any main brand name of memory from your local computer shop.

Below is a list of ASUS TESTED and Qualifed Vendor RAM.

1024 is 1 gig of ram. Some older motherboards require you to put in ram in pairs but I don't think your system is one of those but if you have manual or can download manual you should check to be sure. If you don't need a pair then yes you can remove the 256 meg stick and add a 1 gig stick or you can put in 2 512 meg sticks. Should run a lot better as windows recommends at least 512 megs of ram.

if this is dual channel memory, you have to use matching pairs for each channel. 2 kingston sticks will not neceserrily be a matching pair.

clean your ram and motherboard dust it properly
with a clean cloth

if you satisfy with this solution rate it

This is an oldtime POST code memory error. Likely that ram is either installed wrong, bad RAM or the mobo doesn't like one of the memory sticks.

See http://www.computerhope.com/beep.htm.

You must count the beeps.

it will not work right in your machine the highest it can handle is 400 but can handle up to 4 gigs

The only way you can add space is for you to use an external HDD because an Eee PC has a built-in hard drive that cannot be upgraded.

Does the motherboard support 1 gig ram modules? what kkind of motherboard/video card do you have? sometimes video card onboard ram can ofset motherboard ram, especially with ati video cards.

The specs on the memory are correct, so you purchased the correct type of memory for this motherboard. If your getting no video when you power on with the 1gb stick, I would be willing to bet the 1gb stick is bad. Can you return it and try another stick?

almost anything is possible, but in general a 430 watt P/S should be able to run 2 gigs of ram, however that doesn't mean that the ram you purchased is the correct ram for the motherboard or that you have so many other added perpherials i.e. dual or tripe CD drives, hard drives, USB perpherials that the load is simply to great for your P/S. A rule of thumb is find out what your system ' will ' run with and then work from there. For example if a person was serous about this problem he might disconnect all power connectors to all other equipment other then his hard drive, monitor/video card, and his motherboard just to see if the system could then boot normally. If it did, chances are the memory is okay for the motherboard in normal circumstances. However if the system did not boot normally, it might be an incompatibility with the 2 gigs of memory on that particular motherboard. Memory is not a generic add-on. A person needs to make sure the memory is correct for a motherboard before installing. Also you indicate the present P/S is only 4 months old, any particular reason why you had it changed out to begin with??