Model number 17t-ce100. Occasionally when I put it to sleep and close the clamshell, it wakes back up. Twice now, (yesterday most recently) I opened the clamshell and the HP logo was in the middle of a black screen. Just below that was a circle of dots moving around and around. We're familiar with them. The computer was definitely way above normal operating temperature. The power button light was NOT illuminated. I tried to shut it down using the power button to no avail, so I did what I had to do the previous time. I disconnected the power source and waited for the battery to discharge. Since the battery is internal, I didn't want to open it up. I keep it on a laptop stand that has 2 fans blowing on it