dv7-3080ef w/4Go de RAM but only 2go seen

hello,
I checked in the BIOS: only 2Go recognized
The bios is the latest (Insyde bios F.04) but it seems modded by HP... so there isn't memort remap option or smthg like that... very few options!

CPUZ gives me that:








any ideas? any tip?


I reflashed the bios (with the same version) and now, the bios recognizes 4096Mo RAM!
yeah...
but windows only recognizes 2Go
So I reboot one time and .............. bios saw only 2048Mo again!

what's happened here ?!

What's 2Go? Don't you mean 2GB?

What is windows showing you? Or.. where are you reading the values from? When you go to "System" (winkey+pause)? What about task manager > performance tab?

You can also try running memtest - you can download/burn it to CD or any linux CD should have it as a boot option.