How do i set time limit my screen saver takes over

How to customize Screensaver in Windows 10
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There were times when computer monitors used to suffer from image burn-in issues caused by showing the same image for a long period of time and people used to install a screen saver to avoid the issue. The computer screens today no longer face the burn-in issues, but people still use the screen saver on their computer systems for fun's sake. Windows 10 comes with a six built-in screensavers. Let us see how you can customize screensavers in Windows 10.
Read: Are Screensavers necessary and still needed.
Screensaver Settings in Windows 10 You can get to your screen saver settings directly by typing 'Screen Saver' in the taskbar search box in the lower left corner of your system. Click on 'Change Screen Saver' and it will take you the Screen Saver settings right away where you can adjust the settings according to your own preferences.
Alternatively, right-click on your Windows 10 desktop, and select Personalize to open Personalization settings. Next click on Lock screen in the left pane.

Scroll down the Lock Screen settings and click on Screen Saver Settings. The following window will open. Here you can adjust the settings according to your preferences.

By default, Windows 10 offers the following six screensavers - 3D Text, Blank, Bubbles, Mystify, Photos and Ribbons - nothing new here. Select the screensaver from the drop-down menu and change its defaults Settings, if any are available.
For instance, the 3D Text screensaver lets you customize the text as well as a few other options.

The Photos screensaver lets you display your favorite photos as a screen saver.

Once you are done, click on save and exit.

Create Screen Saver Settings Shortcut

If you access the screensaver settings frequently, you can create its desktop shortcut as follows: However, it is easy to change the settings but if you change your screen saver often, it would be better to create a Screen Saver Settings shortcut on your desktop.
To create the shortcut, you have to right-click on your desktop and click on New > Shortcut.
Type control desk.cpl,,@screensaver in the location space in the wizard.
Click Next and give a name to your shortcut. Click Next and you are done. Give it a suitable icon of your choice.
Use this shortcut to change or adjust your screen saver settings whenever you want, quickly.
You can also create a shortcut to launch or change Screensaver state for a specific screensaver.

goto control panel, personalization, screen savers settings, turn off screen saver , click ok

Control panel Power options adjust time for monitor time to sleep you can adjust 5 minutes to never the option available same can be done for hard disk. This is necessary as even monitor is active and when hard disk goes to sleep you may end up in same situation
Alternatively you can activate screen saver by
right click on desktop, settings screen saver choose screen saver set time to activate screen saver.

To enable the screen saver in Windows XP, right-click on the desktop and choose Properties. Click on the screen saver tab and choose a screen saver. Set the wait time, click Apply and Ok and you're done. for Windows Vista and 7, use the following directions from :http://windows.microsoft.com/en-US/windows-vista/Change-screen-saver

1. Open Screen Saver Settings by clicking the Start button , clicking Control Panel, clicking Appearance and Personalization, clicking Personalization, and then clicking Screen Saver.
   

2. Under Screen saver, in the drop-down list, click the screen saver you want to use.
   

3. Click Preview to see what your chosen screen saver will look like.
   

4. Click OK.
   

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When you set the screen saver there will be an option for the computer to be locked after like 15 minutes idleness. You need to disable it to keep your screen saver on at all times. It is either in your graphic properties settings about screen savers or the power options you can open with a button on the dialog box of screen saver settings or you can open the power options from control panel. If you tell me which operating system you are using I will show you the detailed steps.

Assuming you are using windows XP on this:
Create a new folder in "my pictures " folder
Copy the images you want to use into there
On your desktop, RIGHT click and choose "properties" to open the display settings
Click "Screen saver" and choose my pictures slideshow
Click "settings" to open the options for this
Click browse to point to where you saved the images
Set the duration and timings to suit your tastes
Exit by clicking Ok and the OK to exit the display settings

If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed ACER monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Click the Start menu button. Next, click on Settings and then on Control Panel.

2

Double-click on the Display icon (or on the word Display). This opens a window called Display Properties.

3

Click on Screen Saver. You will see a window with choices related to your screen saver.

4

Click on the Screen Saver list box to view the screen savers that are currently installed on your computer . Select the one you want by clicking on it.

5

Click Settings to adjust factors such as the speed, size and color of the screen saver that you want to use.

6

Click the Preview button to view your new screen saver. If you are not satisfied, go back and change the settings or select a new screen saver from the list of those available.

7

Decide if you want to password-protect the screen saver or to set the amount of time that will elapse before the screen saver comes on, and enter those changes.

8

When you are satisfied, click O

In Windows XP, right click on your desktop somewhere, and choose Properties. On the Screen Saver tab, pick another Screen Saver from the drop down, and set the Wait time to 1 minute. Click OK and see if it works. You may have to drill into "Settings" next to the screen saver. Depending on your hardware, the 3D screen saver might be too much for it to handle. Try disabling some things in settings or choosing a different Screen Saver.
Hope this helps! If so, please give a rating!

The device will only allow you to set certain defaults as far as your background theme and screen-saver. Go to "settings", then "display" and you will should see "screen-saver/and or "background". Once you access this application, it will give you a default list of changing your screen-saver/background for your preference.