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I think the issue is your monitor. If the monitor constantly says Power
Save Mode and not let anything else display then the monitor might be
bad. See if we can isolate the problem by the steps below.
Try booting up in Safe Mode and see if the monitor works ok.
Turn off the computer, then hit the power button to turn it
back on and immediately start hitting the F8 key repeatedly until you see SAFE
MODE. Take the Safe Mode option and let it boot up. Safe Mode will look
different to you, the screen will be darker and the icons bigger, this is
normal. If it works ok in safe mode then the monitor is ok and we might have an issue with a setting.
Try connecting another monitor to your computer. Borrow a monitor
from a neighbor, friend, relative or co-worker and connect it to the
computer. If the Borrowed monitor works ok, then your original monitor
is bad. If the Borrowed monitor does the same thing as your original
monitor then the issue is with the computer (possibly the video card).
Dell monitors automatically go into power-save mode after a preset
amount of time when the computer is inactive. The Dell monitor will go
completely black, instead of showing a screensaver. This doesn't mean
that your Dell computer
has shut down. Instead, this allows your monitor to essentially turn
off until it's needed again. You can change how long it is before the
Dell monitor goes into power-save mode by changing your display
any key on your keyboard or move your mouse. Either will turn off
power-save mode. Alternately, you can press the power button on your
Dell computer tower or laptop.
any key a second time if the monitor goes from power-save to stand-by
mode. Stand-by mode allows the screensaver to appear.
your user name and password into the login prompt if your computer
requires a login. Press "Enter" to begin using your Dell computer.
the display settings on your Dell monitor to prevent your monitor from
going into power-save mode prematurely. Right-click anywhere on your
desktop and choose "Properties." Click the "Screensaver" tab and press
"Power." Beside "Turn off Monitor," choose a time amount from the
drop-down list and press "Apply."
Go to the control panel on the computer and look for power options. On the first page there is power schemes, make sure the scheme is on "Home/Office Desk", below that make sure everything is set to "Never". If you don't want the computer "Hibernating", Go to the "Hibernate" tab and uncheck the box. Hit apply and OK. No more sleepy monitor.
The monitor is not receiving signal from the computer. Is the power light on on the computer? If so - press and hold power button on computer until the power light goes off, then press again to restart. If the computer starts and you still have no picture it is most likely a video card or motherboard problem.