Windows 10: Mysteries about Task Manager Wi-Fi performance graph

When I turn on my computer I open the task manager to the Wi-Fi performance graph to be sure I'm connected. Sometimes it opens with a strange green-on black grid with a 0-100 scale, first image below which shows nothing. What is this, and why does it happen? If I close it and then re-open it, it reverts to the normal graph second image below.The normal graph scales itself automatically, but NEVER high enough to show the peak reception rate. Why? I think I should be allowed to set the scale myself, to whatever I want. Also, what is the purpose of the heavy line across the graph? In t

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Task manager : performance > WI FI

Hi. I entered in task manager>performance and there I had Wi Fi ..I don't know what I did but I deleted from there (doesent appear no more)

so how I can put it back..?

 

GPU graph in Task Manager's performance tab

I would like there to be a GPU graph in the task manager in the performance tab.

Anyone know why there isn't any?

Example:

 

Wi-Fi errors (Windows 10)

I'm currently troubleshooting a HP laptop (HP G62-a10SQ to be more specific). The problem is that it doesn't want to connect to any Wi-Fi network. It leaves me with the generic error "Can't connect to this network." I've tried these steps so far

• Restarting the computer
  
• Flushing DNS
  
• Releasing and renewing the ipconfig
  
• Uninstalling the driver
  
• Reinstalling the driver
  
• Reseating the Wi-FI module
  
• Checking Windows Update for any drivers
  
• Updating the driver in Device Manager
  
• Temporarily removing my Wi-Fi encryption
  
• Trying to connect to a different Wi-Fi network outside of my network
  
• Probably more troubleshooting steps I can't remember atm (I will edit the post if I remember anything)