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My monitor on pc switches on then NO SIGNAL appears on screen then goes into stanby mode why is this

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Hi there
Check the leads from the PC to the monitor, if they seated well try to boot up into safe mode by pressing F8 on start-up, if you can get into safe mode and see the monitor uninstall the graphics drivers and restart the pc, hopefully the machine will boot properly and reinstall the drivers for you.

Kind regards and post back if any more problems

Posted on Jan 05, 2009

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You have the power cord plugged in, but you don't have the monitor connected to the computer.

Posted on Jan 05, 2009

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My Acer V223W LCD Moniter, It all started a couple of weeks back, when it went into sleep mode the screen would turn off and the power will flash from stanby to on then off and repeats. I could fix this by...


It also doe the same if you use this monitor to your brother's PC? Just want to make sure since you will have to open up the monitor if the monitor is bad for sure.
It is more likely to have power supply problem due to unstable DC feeding the circuits because of bad DC filter caps as you can see to these ACER monitors here and also ALL other brands as well.
http://s807.photobucket.com/albums/yy352/budm/ACER/

You can learn about troubleshooting here:
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: www.interliquidparts.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.

Jul 07, 2011 | Acer V223W Monitor

1 Answer

I changed some setting for the computer resolution and now my monitor just says no input signal..the hard drive turns on and then goes into sleep mode and says no input signal. How can i fix this problem?


Possible reason is that input signal goes out of range that probably a Screen refresh rate that the monitor cannot handle. Instead of bursting into flames, the monitor shuts itself
down as a protection feature. Look at the monitor manual if you got one.

Safe Mode should allow the monitor to work in the problem account.

Try this.

Boot in Safe Mode (see below)
Switch users to the problem account
Right click the desktop
Select Properties
Click the Settings tab
Click the Advanced button
Click the Monitor tab
Select: Hide modes that this monitor cannot display
Select a different Screen refresh rate
Click Apply twice and then Click OK

Or try this:-
power on the system and press and hold F5.
When a screen appers with some option, try to find a option something realted with VGA setting.
Click that option and let pc start normally.
It will surely work

Dec 10, 2010 | Hannspree HW191D LCD Monitor

1 Answer

Monitor switches on then goes into stanby


No input from Video card, try to connect second video cards head to your monitor.

Apr 19, 2010 | Dell E173FP 17" LCD Monitor

1 Answer

No VGA signal on AOpen EPC945-m8


From your description, it sounds like once Windows starts it's switching to a video mode your monitor doesn't support. Try starting in safe mode or in vga mode, then check your desktop settings. Set the monitor resolution for 800X600 or 1024X768 at 60Hz refresh and restart. All recent monitors will support those rates, so you'll be able to get back to Windows.

Jan 24, 2009 | AOpen EPC945-m8 (95EP4596B1) Barebone

2 Answers

LG LCD monitor goes in power saving mode


That means theres no signal coming from the PC. either the PC is not booting up or the VGA coard is faulty.

Nov 25, 2008 | LG L1915S 19" LCD Monitor

1 Answer

Monitor stuck in sleep mode


It will do this when it's not getting a video signal from the computer. Make sure that the signal cable is firmly plugged in at both ends. Also verify that the computer is actually starting up. The monitor may not be getting a signal because the computer isn't sending any.

Sep 25, 2008 | Compaq TFT5015 15" LCD Monitor

1 Answer

Computer monitor comes on for 1 seconds, flashes "analog power save mode" and then goes black.


Most monitors will say "Power save mode" when they can tell through residual voltage that the signal lead is plugged into a machine, but there's no picture being transmitted. The four states of a monitor are:

* Off entirely.
* Switched on, plugged into a computer but no video signal being received - usually displays "analog power save mode" or "digital power save mode" for a few seconds, then blanks. Comes back to life the moment a video signal is received. This state is the default in full power saving mode.
* Switched on, not plugged into a computer. Some monitors don't display anything, some go into power saving mode, some fly "CHECK SIGNAL CABLE" or a similar message around the screen. Picture is restored when the signal cable is plugged back into the computer
* On fully, receiving an image, and displaying.

Hope this helps.

Jun 01, 2008 | Computers & Internet

1 Answer

On Pwr up logo appears then LCD returns to stanby Black screen


I will assume the monitor is staying on during the boot process all the way until Windows loads.
If that is the case, then...
  • Start the computer
  • wait until the initial bios/logo screens for your motherboard go away.
  • Press F8 to get the Windows recovery boot menu
  • If you see the Windows Logo you would normally see then press rest and try again.
  • In the recovery screen, select SAFE MODE
  • Boot into Windows and uninstall your video card.
  • Reboot the computer the normal way through the start menu.
  • When your PC starts back up it should then reinstall the video card, and set itself automatically back to 60khz as default.
Let me know how you go =)

Jan 20, 2008 | BenQ FP71E 17" LCD Monitor

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