Playing on laptop with Windows 7.
Laptop's model: Lenovo IdeaPad.
Intel Core i3 2.1 GHz
3.0 GB RAM
nVIDIA GeForce GT 240 M
Previously I thought that is because laptop doesn't have so-called gray num keys and StarCraft simply do not detect buttons in the game, but I've made my own hotkey preset in which bag and inventory buttons are represented as Q and W, but they are still inactive.
If it has been discussed before and inventory just isn't released yet I am sorry for not reading the whole topic.