Corrections in red.  Stylistics in blue.

It Is Better Not to See Things from the Back Sometimes

The window in my home study had to be replaced today. The workers warned me that the/this work would be very dusty, and I'd have to remove delicate things from the room. As the result of this warning, I had to move my computer to the sitting room and place it on the dining table. When I saw what it looked like, I was stunned, and thought that things often looks better from the front side than from the back.

I underwent an electrocardiogram two weeks ago, and with all the wires and electrodes attached, I looked exactly like the back of your computer!