Why has my screen saver stopped working

I am new to Mac....2 days ago my computer would show a variety of screen savers when the comp was not in use. Now it goes onto hibernation mode only. I have to push the power button to wake it up. I went into system pref and made sure that the setting were on random and i tested it... but it still will not show the screen saver. Can someone tell me how to get this back?

Make sure your Screen Saver settings are not in conflict with the Energy Saver settings in System Preferences. If you put your display to sleep before the screen saver, you're never going to see it.

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Help! My screen saver stopped working?

2013 iMac
3.1 GHz i7
16 GB DDR3
OS X 10.9.3 (13D65)
My screen saver stopped working about a month ago. I tried resetting the PRAM and it worked for a few minutes, but then it stopped. I tried using Hot Corners, but it starts and then turns off after a few minutes. I am able to make it work if I turn Airport OFF and disconnect the computer from the internet.
What are my recommended next steps to get the screen saver back to normal function?
Thanks for any and all help.
Joe in NY

This worked for me . . .
ds store At the center of the Dark Zone
Re: my screen saver on my new mac book pro stopped working. I have rebooted, changed screen saver mode it still does not work
Oct 9, 2012 12:45 PM (in response to cogma)
We are going to delete a hidden file.
Finder > Go Menu > Go to Folder and type or paste
~/Library/Preferences
and scroll down until you see
com.apple.systempreferences.plist
drag the one you can (may see two) to the Trash, reboot, reset your System Preferences again.

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First, try a system reset. It cures many ills and it's quick, easy and harmless...
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If the Reset doesn't work, try a Restore. Note that it's nowhere near as quick as a Reset. Connect via cable to the computer that you use for sync. From iTunes, select the iPad/iPod and then select the Summary tab. Follow directions for Restore and be sure to say "yes" to the backup. You will be warned that all data (apps, music, movies, etc.) will be erased but, as the Restore finishes, you will be asked if you wish the contents of the backup to be copied to the iPad/iPod. Again, say "yes."
At the end of the basic Restore, you will be asked if you wish to sync the iPad/iPod. As before, say "yes." Note that that sync selection will disappear and the Restore will end if you do not respond within a reasonable time. If that happens, only the apps that are part of the IOS will appear on your device. Corrective action is simple - choose manual "Sync" from the bottom right of iTunes.
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why has my kindle app stopped working

Be advised that a kindle is not an Apple product. I suggest that you contact Amazon.
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Topic: Why has this simple midlet stopped working?!!

I have a midlet which was working fine, but now gives the error, 'No such method getTitle.()Ljava/lang/String;'.
I have now created a very simple test midlet that includes the problematic line of code:
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class GetTitleTestMIDlet extends javax.microedition.midlet.MIDlet implements CommandListener {
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}It is the line, 'dTitle = ((Screen)d).getTitle();' that is giving the error message. It happens both on Sun ONE Studio 4 and with JBuilder with Nokia and Siemens emulators.
Everything used to work fine. All I have done since it last worked is create a couple of JApplets and JFrame classes in Sun ONE Studio 4. I have noticed that the 'Explorer [Filesystems]' view in Sun ONE Studio 4 has changed in appearance since the midlet last worked, but there are no other clues.
It must be something to do with my setup rather than my code.
Can anyone please help!
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The problem was with the compiler. It stopped working for some reason... Once I downloaded Wireless Toolkit 1 again, and compiled again, it worked!
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Screen saver stopped working with Mavericks

Hi,
Actually I have two problems.
1. Since upgrading to Mavericks, my screen saver does not work. How do I fix this?
2. Since upgrading to Mavericks my Apple menu bar at the top is no longer transparent and some times does load at start up. I do have it set to be transparent. If I click on a program on my dock, the menu bar will appear, but not transparent.
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To get your screen saver and sleep mode working again just follow these steps:
This is always due to a process keeping the system awake, but determining which is the challenge.
A first simple step is to create a new, temporary user account. Log out of yours and log into the temporary one. Determine if it sleeps then. If it does then you have a login item that is preventing sleep. System Preferences > Users & Groups > Login Items.
Whenever you suspect a problem related to power, including sleep, an SMC reset is also recommended.
Active Spotlight indexing will prevent sleep. Wait for it to complete. That may take several hours following an OS X upgrade.
Check your Sharing preferences for anything that could permit an active network connection.
Energy Saver "Wake for network access" can prevent sleep, but unchecking it will prevent the ability to remotely access a sleeping Mac over a network.
A normally functioning Mac will sleep according to Energy Saver, but will wake periodically for network access, after which it will return to sleep according to the settings in Energy Saver.
Check Energy Saver > Power Nap. Whatever its setting happens to be, change it. Power Nap itself does not prevent sleep, but a corrupted Power Nap setting might. Changing its setting might correct it.
Unfinished print jobs will prevent sleep. If a print job is queued, but if the printer is off or the connection to it is lost, the Mac will stay awake forever waiting for the printer to return.
Safari pages that periodically refresh themselves are very common. This will prevent sleep.
Frequently checking for new mail may prevent sleep. Change Mail's preferences to check for new mail less frequently.
iTunes and iPhoto sharing will prevent sleep.
Active Bluetooth devices will prevent sleep.
Active USB or Thunderbolt devices will prevent sleep. Disconnect them to help isolate the cause.
Using Time Machine over a network may prevent sleep. Time Machine using a Time Capsule will not.
There are plenty of third party utilities designed to prevent sleep. One may not have been completely uninstalled.
Quit the process with the name powerd in Activity Monitor. It will re-launch on its own.
Any number of "anti-virus" utilities can prevent sleep, along with other miseries. Get rid of them.
Read Mac OS X: Why your Mac might not sleep or stay in sleep mode
It may be instructive to identify the actual process that is preventing sleep. The following instructions can be used with any OS X version.
Open Terminal and Activity Monitor. Both are in your Utilities folder. Leave them open.
Open System Preferences > Energy Saver, and set the Mac to sleep after the shortest possible idle time (one minute)
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When it becomes obvious the Mac will not sleep, type the following in the Terminal window, followed by the Return key:
pmset -g
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sleep 1 (sleep prevented by 360)
Note the process ID (360 in the above example). Mavericks will indicate the process name directly.
In Activity Monitor, select Window > Activity Monitor, and select the CPU tab. Click on the column with the heading "PID" to sort processes by their process ID. Find the Process Name corresponding to the PID above.
That will be the process that prevented sleep.

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Why has my screen saver stopped working

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