AzizHusain

Like beeps, cracking, or whistling type sounds. Maybe a loud BRRRRRRRRR "pause" BRRRRRRR could mean the fan needs to be cleaned.

Hmm, repeat the process 2 more times. It might just take more than once. Remember, to press the power button once after plugging everything back in [also, make note of any weird sounds].

Yes, definitely. Once we get an understanding of anything, we come to appreciate it and love it...it's interesting how it works! I'm glad you enjoy math and this website certainly does spark interest...if only people could see the wonders of helping and learning by taking some time to do them.

Yes, everything must be removed and then he held the power button for a while.

As for your internet issue, do you have an ethernet cable? It is thin and connects your computer to the modem [like if your company is ATT, they give you a modem to connect your ethernet cable]. You won't need wifi if you have an ethernet [comes in a variety of colors and sizes].

Yes, for the first step, you are not supposed to see anything on the screen because you are clearing out the static in the computer by pressing the power button [that is why everything is unplugged]. 

You just unplug all wires, then hold the power button for 1 minute, let go of the button, reconnect all the plugs, and then you press the power button once just like when you normally turn on the computer to see if the screen appears or not.

Oh, the first one about the power button. Try that first. Then, do the cleaning.

Just make sure everything is unplugged first.

Don't shake it but just spray in "quick bursts" like spray, then stop, then spray, then stop [use it slowly and don't let any of the foam material build up inside since it is extremely cold]. You need to take apart your computer to do this thoroughly though!

Important information needed to solve the problem is missing.