Windows 8 Laptop - Screen Turns Black During Presentation

I am using Windows 8 on my laptop. If I connect my laptop to a video projector and left it idle for about 4 minutes, the screen turns black. So I am trying to avoid this. Here is what I did so far.

First I found that for Windows 8, the option of presentation setting is not available in Control panel -> Windows Mobility Center (Fig. 1).

Next I looked for the screen saver and found that I have not activated it at all. Also the (Fig. 2)

Next I tried to Change the power setting by going to Control panel -> Change power setting -> Change when to turn off the display and set all of the as Never (Fig. 3)

I still got the black screen after doing these. Finally I noticed that after I left my laptop idle for about 4 minutes, it says "maintenance is in progress" in the "Action center". After searching through web, I found that an easy way to stop this maintenance during my presentation. I disconnected from the wireless internet temporary when giving a presentation. I tested this and after disconnecting from internet there will be no "maintenance is in progress".

However, the screen still turns black during presentation, even after disconnecting from the internet.