Forum Thread: Is 99% Disk Usage Normal for a Win8 Laptop?

So recently, a friend of mine handed me his laptop saying "Here, fix it. I dunno whats wrong with it, but its laggy"

First things I checked were the win8 task manager.
Disk Usage: 99%
RAM: 72%
CPU: 68%

I don't know much about how much Disk/RAM/CPU that a win8 laptop should be using when at standby/initial boot. (I've mainly used OSX, and win7)

I suspect malware may be using my friend's laptop.

Though, when I opened command prompt, typed:
netstat -ano

I got a list of internal IPs, nothing suspicious, except one IP I've never seen before...

Windows8 users, is these stats normal?