The time on the screensaver is wrong. I have changed the time in the menu settings and the time on my main screen is correct. Is there a way to fix the screensavertime?

How to customize Screensaver in Windows 10
RECOMMENDED: Click here to fix Windows errors and optimize system performance
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.

Go to start and type "Screen or Screensaver" it should bring up a choice in the grey menu. Click is and go to Timer and add you time. Or scroll the bar till it says NO screensaver

IT IS BECAUSE YOUR SCREENSAVER TIME IS MAYBE ONE MINUTE SO IF YOU CHANGE IT YOU WONT FACE THIS PROBLEM IT IS JUST IN THE SCREENSAVER SETTINGS DONT WORRY. IF IT STILL DOES NOT CHANGE GO TO THE STORE AND FIX IT

Push the main control knob (right side of the unit) either up or down, until the Kenwood's display screen shows "Clk Adj." Press the center of the control knob for about a second to enter the clock-setting mode.

2 Push the main control knob either up or down to set the Kenwood's hour display. Stop when the correct hour shows on the screen.

3 Push the main control knob to either the right or left to adjust the minute display. Stop when the correct hour shows on the screen.

4 Press the "Menu" button located in the bottom-left corner to save the changes you made to the clock. This returns you to the main menu

From the main menu, select Change Preferences.

From one of the Preferences screens, select Set Clock. Choose the format that you want the time to display, then set the correct time. The Sync button will take the time from the satellite.

main menu + settings+ phone settings +display settings +screensaver

Check to make sure the screensaver settings are correct. Adding RAM to a PC won't change how the screensaver works, unless you also added some software that is not letting it sit idle long enough for the screensaver to come on.

Yeah - go into the Settings menu and turn the screensaver to OFF

To set up your screensaver, right click on your desktop and choose Properties. Choose the Screen Saver tab. In the drop down menu for Screen saver, make sure something is selected instead of (None). Next click the Preview and it will give you a glimpse of what the screensaver you chose will look like. Move the mouse to get out of it and select apply if you like that one or choose a different one.

Black screen is probably a screen saver or the screen is turned off by power management software.
Check your screensaver setting. Change the screensaver to None to disable screensaver.
I assume you are using Windows XP.
If the LCD is turned off by power management, on the same screen with screen saver, on the lower part of the box there is a Power button. Click to open Power Options Properties. Set your monitor power properties there.
When the screen go blank and you have to push power button, probably the computer is set to go to stand by mode after some idle minutes. You can also set it here in system standby setting.
Regards, 
Dapid Candra