I bought a customized HP Pavillion 15z laptop which was delivered a few days ago. At first everything was working fine. Then Windows Update found a bunch of updates for the installed drivers so I figured I should install them. Boy was that a mistake. After I did that, the computer ceased to have the ability to enter sleep state or perform a proper shut down. The screen will turn off but the computer will remain on. I have to force shut down using the physical button, which I know is not good for the SSD. I did some research and found out the the audio driver installed on this system is known to cause sleep/wake issues. So I ran the powercfg /energy command to see if that driver had any requests and it did, AT FIRST. I restarted the computer (because for some reason that works fine), and ran the command again. The request wasn't there so I tried putting it to sleep, thinking the issue was solved, but to my disappointment, it still wouldn't sleep. I ran the command again. Still no sleep prevention requests. I also tried all usual troubleshooting steps: disable fast boot, turn off hybrid sleep, disable hibernation altogether, rollback Realtek Audio Driver, etc. I'm returning this POS to HP. The purpose of this post is to warn others not to buy this laptop.