Ubuntu 12.04 LTS 32bit does not detect 4Gb ram

@fossfreedom - Problem has been fixed by upgrading the BIOS to the most recent one. Thanks for the hint! See available memory output after the change:

administrator@Root2:~$ free -m
             total       used       free     shared    buffers     cached
Mem:          4026       1105       2921          0         45        311
-/+ buffers/cache:        748       3278

Even if you were running windows you wouldn't see the entire 4gb of memory allocated. Part of it is reserved for Graphics Ram. If you go to the Manufacturer website and look at the technical specs for your system under memory it will tell you how much of the installed memory is usable.