4GB only 3GB usable

SkateArc

Estimable
Oct 10, 2014
83
0
4,590
hey guys i have a toshiba A100 with a core duo cpu with 32bit vista ultimate, it says i can only use 3 out of the 4gb installed how can i fix this issue? here are some pics, P.S if needed i can install Win 7 if thats needed.

https://www.flickr.com/photos/129003816@N07/15501165898/
https://www.flickr.com/photos/129003816@N07/15067192363/
https://www.flickr.com/photos/129003816@N07/15662839736/