Question about HP Pavilion 754n PC Desktop

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NO POWER YES, ALL PLUGGED IN. TOWER HAS POWER COMING ON BUT NO SIGNAL COMING INTO MONITOR OR KEYBOARD. NO SCREEN OR KEY BOARD ON.

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Hmm. Well, that doesn't make sense, as your monitor should power on even if isn't hooked to the tower. I'm out of ideas.

Posted on May 06, 2008

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Posted on Jan 02, 2017

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Tower turns on but screen says no signal?


Check to be sure your monitor connection needles are seated properly. Is mouse wireless or connected to back of tower?

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Usually, you have to use one of the function keys at the top of the keyboard to transfer the monitor signal from the normal output to the HDMI. It will depend on the model of computer. You might try holding down your function (FN) key and depressing F5. That's usually it. But it could be F9 on some models. You should see a design on the function key that looks like a monitor. See if that does it.

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My 19 inch monitor no longer comes on....the blue light on the on off button blinks..and that is all.....help.


Hi,
Please check if all the cables are properly plugged in. If yes, then remove the vga cable with the blue plug from the back of the monitor, make sure that you do not remove the power cable. if you see monitor self test or any colors on the screen it means that the monitor is fine. but, if there is no display still you need to change your monitor.
then the problem is in the tower, please check the power supply if it is working or not. If yes, the problem is either with the mother board or the memory.

Thanks and Regards
Anand Sachan

Oct 25, 2010 | Princeton Digital Computers & Internet

1 Answer

MY HP TOWER TURNS ON AND THE FAN RUNS, BUT DOES NOT SEND A SIGNAL TO THE KEYBOARD OR MONITOR. BOTH THE KEYBOARD AND MONITOR HAVE POWER AND ARE PLUGGED INTO THE TOWER. ON OFF BUTTON IS ILLUMINATED ON THE...


If the keyboard and is USB, you can try another USB port. For the monitor not getting display, I would try either a different monitor or a video card. Otherwise, the motherboard could be the problem.

Oct 02, 2010 | Computers & Internet

3 Answers

My monitor has kicked into sleep mode and won't "wake up".


Unplug all the Cables from Compaq Presario 5103 CL and leave the Keyboard, mouse and monitor cable pluged in.

Now make sure the power cable of the monitor should be pluged in and the power cable of the tower should be pluged in.

Now to check if the montor is fine just unplug the video cable only which will show no input signal on the screen. If it shows this signal the monitor is fine. Plug back in the video cable.

If the monitor is going to sleep mode it might be possible that the old computer ( Compaq Presario 5103 CL ) is in stand by mode. hit any key on the keyboard and it should come back .

If it is not in the stand by mode then do one thing. Check the same monitor with the new computer. If it is working. Perfect ..!

Do one thing now ..!

Unplug all the cables from your old system and then press the power button for 30 sec and let it go. Now plug the keyboard, mouse and the monitor try again.
If it works Perfect. If not ..!

Then you need to open the tower and check on the processor FAN is it running..? If its not running you will not get the display as the fan is responsible for the display on the screen. Otherwise...!

Check the Tower possibly the Tower is not getting the power.

Try these steps and let me know If it works

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I have a dell optiplex sx280 computer and monitor that has lapsed into ''power save mode'' and I have been unable to ''awaken'' it (I'm not sure which is ''asleep'': the monitor or computer!) from sleep. I...


How's the status light of your computer monitor? is it blinking amber? and the status light of your computer tower's power button? blinking amber as well or solid green or no light at all?

1. Disconnect all the connection at the back of your computer tower
2. Press the power button of the computer tower for 15 seconds
3. Reconnect the power button and the monitor cable at the back of your computer tower and turn on the computer (if it turned on that means that one of the device plugged at the back of your computer tower is faulty)
4. If still the same problem, open up your computer tower.
5. Reseat the video card, Reseat Hard drive, Reseat Memory, Reseat CPU, Reseat power cord coming from the CPU to your computer (doing all things one-by-one to pin-point the root cause of the issue)

If none of the troubleshooting steps fixed the problem, possible that the power supply is faulty and if the power supply is faulty sometimes it goes with the motherboard.

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1 Answer

Gateway gt5676


Sounds like there may be more than one problem, so first let's make sure you shut the computer down completely:

1) Press and HOLD the power button on the computer tower until it goes completely dark. A single press often puts the computer in sleep mode, so holding the key for approximately 5 seconds usually forces a power off. After doing that, If you're still not sure if it powered off, unplug the AC power cord from the back of the computer tower for a few seconds and plug it back in. Now, make sure all other cables (monitor, keyboard, mouse) or wireless USB adapters for keyboard and mouse are securely plugged in where they are supposed to be.
2) Press the power button on the computer tower briefly to turn it back on.
3) Everything may be working now, but if not:
a) Monitor still dark? Make sure the monitor is on and plugged in, also, there is often an input source button on the bezel of the monitor to toggle between input sources (such as VGA, DVI and even HDMI). Press and wait a few seconds for a picture, repeat slowly at least 3 times.
b) Keyboard or mouse still not working? If wireless, make sure they have fresh batteries and that the wireless USB adapter is plugged into a USB port firmly. If wired, make sure the cables are plugged in firmly into the correct places on the back of the computer.

If all that fails, your new computer may be faulty and need to be returned to where you purchased it.

Apr 12, 2017 | Gateway GT5676 Desktop PC

1 Answer

Blank screen


When you say "When I turn on the computer the monitor acts like it is getting no power", do you mean the light on monitor doesn't come on or it does and it states it has "No Signal"? If it says no signal then it is receiving power just no signal from computer. What kind of connection is it? Digital(white) or analog(blue)? Is the keyboard wireless or is it PS/2?

If the keyboard isn't wireless and you're plugging the monitor in correctly I would say it's a power supply issue. Try changing the outlet you're using and/or bypass the surge protector to plug directly into wall.

Jun 24, 2008 | Compaq Presario SR1103WM-B (PC183B#ABA) PC...

1 Answer

No power


Have you plugged both of these into the back of the tower? Ensure the keyboard is in the appropriate plug-in, and the monitor's power cord is plugged into both the wall and the monitor itself.

May 03, 2008 | HP Pavilion 754n PC Desktop

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