my 4gb is showing only as 3 gb on T400 xp sp3

[T400plus]

I have got 2 cards of 2gb each in my memory slots.when i see memory by right clicking on my computer it
displays as 2.99 gb only.I am using 32 bit xp sp3 (the xp for which i was fleeced by lenovo by approx. 70 $).
what is it?. where 1 gb gone ? Are any setting required in thinkpad bios ?
my thinkpad is t400 wxga+ type 2765-T6U

[marvel]

32-bit systems can only access max 4gb of ram. See link for more info:
http://www.brianmadden.com/blogs/brianm ... -mean.aspx

[T400plus]

no,that doesnot answer my query.Where is my 1 gb hiding?

[w0qj]

You need 64-bit Win 7 to future-proof your machine.

My T410 (2522-RE3) with 32-Bit Win7, I have 4 GB RAM, but it only "sees" 3 GB of it

[T400plus]

i have my old 1gb memory boards still with me.Will i get same performance if i use 2gb + 1gb or do i lose memory even then?

[marvel]

It´s probably the graphic chip in your machine that uses some of the ram. Try to turn off the switchable graphics and only use your ATI chip and see what happens.

[T400plus]

thanks yes, I had switched it to discrete only long back.
I think service centre must have mucked it up.(Lenovo,s service centre @mumbai).
I have a xvga+ as my ccled lcd 14". I will reset it again as soon as i am through playing my sudoku rounds.