Keep a check on what's using resources more with What's My PC Doing
It’s good to keep a check on what’s using your resources especially, when there is something unusual happening such as hard disk LED flashing or CPU fan emitting sound more than normal. So, we have a software that does the job for us.
What’s my PC doing is a freeware for Windows that shows all programs (with details!), that are accessing your hard disk or using the CPU. Furthermore, it offers the option to close these programs or even uninstall them.
It is just the same as Windows Task Manager but a bit more informative. The latest version has been analyzed with 30 anti-virus engine and found to be virus free. You can download the program from here.