My computer's Screen will not come up, why?

The diagram shows a pen of some-kind ???

i dont get a smily face in the lower right hand corner help!!!!!

My computer was fine, everything fitted to the screen size and has done since I got the computer (3 years now) but 2 days ago when I restarted the computer upon reboot everything was enlarged, for example the loading screen and the windows vista symbol...

i have 2 of the exact same computers and i am using an HDMI cable to connect to the TV. With my other computer I plugged in the cable and I found an option where on my TV came up this screen with a bright green background and it had NVIDIA in the center...

25. The sound recorder allows you to record up to a maximum of how many seconds? (1 point) 45 seconds 120 seconds 90 seconds 60 seconds 26. The ___________chip controls the most basic functions of a computer. Every time you turn on your computer, this...

hi i have a problem.... was sitting in waterfall/heathcote national park sitting on the cheap portable chair i take with me (there effin great)..my semi old computer 5 yrs old..lol i cant see screen properly due to sunlite and summer sun ..thank god...

What do I do? If I reduce the resolution, the letters become more fuzzy, but they do fill up the screen. But I like the nice clear crisp higher resolution, cause it is so much clearer. But the web sites come up tiny, like only filling half the screen...

The new video editing teacher at my high school wants to film the announcements (to be shown at the beginning of the last class of the day), and have her class edit them as though they would be shown live, like a real news report, with a green screen...

So I'm no expert with computers, but I'm also no novice either. I built a desktop out of parts my buddy and I had laying around, and it worked great for a few months, then one day when I tried to start it up, the screen would not come up. Thinking it...