On a basic level, press Ctrl + Shift + Esc to open Task Manager, then check out the Processes and Performance tabs. You can sort the processes by CPU and memory usage to see where the resources are primarily going.
is there such a utility that will tell me what is going on in the background (windows vist)? so when my computer slows, i can see why? sometimes, this slow down is very inconveinient, and if i could postpone the actions, it would be helpful. thanks.