Why does my tablet suddenly have tiny little script running down the upper right side of my screen, and he very top changes colors ? And how do I get rid of it?

For an older iPad, it is the little button on the side of the same side of the iPsd as the volume control buttons.

For later models, it is part of the iOS.
Press the Home button (if your iPad has one) to return to the Home screen.
Press and swip down in the upper-right corner of the screen.
The control panel will appear.
Tap the button that has a circular arrow on it, with a lock icon in it to toggle the screen rotation lock Off/On.

Press and hold the upper silver/gray button on the right side of the iPad near the top. The volume level should appear on the screen.

Mine has a little camera icon in the upper right of the view finder picture under which is a round arrow. If you touch this icon the camera will switch from front to back and vice versa.

Have you tried: settings-device settings-display-font size?

After you have tried a reset (hard & soft) you"ll need to take the back off. once you remove the two screws you can pop off the colored backing. Remove the black tape (don't worry if you put the webcam out)Unplug everything, start at the bottom with the hard drive. Just lift the little black tab & it will come right out. Then then unplug the monitor in the upper right side. now press the reset button hold & press the power button hold 20 seconds. now plug everything back in just side the ribbons back in place & close the black tab. Now close the backing & turn the tablet on it will load to the welcome screen.

Assuming Android system.
Enter " Settings " ( gear ? icon generally located in bottom right corner, newer Android versions )
Scroll down - Left side
select - Capital Letter " A " ( Language )
then, on Right side -
select 1st / first item
next - scroll down list and select your preferred Language.

It sounds like their is moisture or clamyness inside the tablet. Let it lay in the sun bit with the screen downwards. See if it solves the problem.

If you haven't resolved the language issue yet, try this:
1. power up the tablet by pressing the power button on the left side of the top edge of the tablet
2. slide the lock to bring up the home screen
3. across the top of the screen you'll see a magnifying glass (top left), a microphone, a folder with three dots on it (center) and dark area on the top right corner with six blue squares in it. Press the squares. Now you'll see your apps.
4. swipe your finger across the screen from right to left to show the next screen of apps. Look for the Settings app. It's grey with a light grey gear/sprocket in the center. Press that and you'll go into the Settings screen.
5. Down the left side you'll see a menu of options. Look for the Language and Input option. It is the one that looks like a solid light coloured square with the letter A in the center of it. Press that.
6. when that's hightlighted on the left side of the screen, you'll see the language option at the very top of the right side of the screen. There's no icon beside it, but it's the very top option. Press that.
7. the twelfth option in the list that comes up on the right side is "English (Canada)". Count down to the twelfth option and press it. The language of your table will be English. Go back and change it to something else if you don't want that particular English option.
Hope this helps. I found this youtube video that might help, too.
http://www.youtube.com/watch?v=e_rK6WRT3Ps
Skip ahead to 2:38. That's where he turns it on and then he changes the language (he could be changing it to Spanish, but you'll get the idea).
Mike

The blue screen is known as the screen of death for a reason. You can try getting it fixed but most likely you'll need to replace it.

have you tried the soft reset yet?
take out the battery and let stand in freezer (put in plastic bag to keep out moisture) for 10 mins.
hold down the switch key wich is right above the escape key on the left side of the screen. and hold down the power button till she turns on. once you get the usb symbol in the upper right turn it back off and it should run like normal.