Question about Acer Aspire M1641-U1521A PC Desktop

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System frequently shutting off & re-starting, monitor response is no signal, then it goes off & re-start. but the CPU LED light doesn't goes off, when it happens.

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Check for loose connections outside and inside the computer, CPU fan might not be working due to which it overheats and this issue occurs, also disconnect external devices and reload bios defaults.

Posted on May 29, 2010

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Acer pc and lg monitor blank screen says power save mode on start up, anyone know how to fix this?


Actually during start-up there is a slight delay before the HDD & OS is detected by the CPU. Normally all monitors slip into power saving mode within 10 secs of inactivity of either mouse or keystroke. This inactivity is read by the monitor which promptly switches to power saving mode. However the moment the HDD LED starts blinking, the monitor wakes up & starts displaying. This power saving mode in most of the flat screens is only associated with movement of mouse or keypad. This does not register till the CPU starts up & thats why the monitor switches over to power saving mode till it starts receiving signal from the CPU.
It is a normal behaveour, so don't get worked up over it, plus you can always hit the Auto set feature on the monitor after booting the PC completely. ( I think the time out for the monitor to enter power saving mode is only 10 secs). Hope this helps.

Oct 08, 2012 | Computers & Internet

1 Answer

Pc not booting


If you hear the CPU fan turn on that doesn't mean the CPU itself is working. It can be only that the motherboard is getting power. Check all your connections such as monitor and peripherals and re-connect them. If you still don't get P.O.S.T. or ANY letters or boot options on your screen then your CPU is dead. (unless your monitor is bad)
Another easy diagnostic is using your ears. For example the pitch sound of the fan in some motherboards tends to lower and then increase because it's reading of the hard drive. This means your CPU is ok but either your graphics connection is bad or your monitor is.

Apr 22, 2012 | Intel Motherboard

1 Answer

The cpu is running,the motherboard is with green light inside,but the monitor blanck


what king of monitor you have., crt or LCD, does the monitor led indicator has a green light, is there any beep when starting the cpu? how many beeps you have heard when the cpu was starting?.

if there is no led indicator light in you monitor the posibilities of that is the monitor was the problem.
solution: try to check your plug in monitor if it is properly inserted in the power plug or in the vga plug correctly.

if when you power the cpu and your monitor led indicator, turn green and back in the standby mode. listen to the beep sound of cpu if theres any.
solution: try eject the mem card. in the slot and clean the contact with the eraser. and put it back into the slot again after you clean it.

Mar 28, 2011 | Computers & Internet

1 Answer

Hi, My SONY CPD G420 monitor has suddenly stopped working - the front led is blinking amber. After power cycling the LED stays green for a few seconds before going back to blinking amber. I have verified...


just unplug the signal cable and see if it shows a warning! if it shows then the monitor is in some working condition! this problem mainly is not the monitors problem its the systems problem, it seem as if the system is in standby when u on it right??? it happens when the processor doesn't get supply or it refuses to come on! you will see that the red hdd load led will not light when u start the CPU; just open the CPU and unplug the smps from the board and blow the pins to clean them up and re-fix it and see it will work. if still it doesn't work try some other smps it will work! reply and revert back for more help with a vote!

Jul 24, 2010 | Sony CPD G420 19" CRT Monitor

1 Answer

I have a samsung syncmaster 204T monitor. Everything was fine until last night when i kept my system on standby for approx 5-6 hrs. Now whenever i start my system there is only a green led on front panel...


I just started having the same problem! The green light flashes, but the monitor is blank. None of the button work (menu, source, etc...) and nothing changes when I disconnect it from the computer. I was suspecting a bad graphics card at first, but now I'm thinking the monitor itself is bad?!

Jun 29, 2010 | Samsung SyncMaster 204T Monitor

1 Answer

No output from CPU - led lights up, CD drive


Just for a chance , can you press f8 before it loads windows or alt and f12 or f12 by its self to give u a system restore setup, or a last known good confirutation options, hope this helps in some way, remember keep pressing either of these just before the point it goes to load windows, strait before bois screen goes.

Dec 04, 2009 | HP Pavilion a1140n (PX774AA) PC Desktop

1 Answer

17" monitor has power running into it but when you press the power button, speakers crackle but no image on monitor & power LED goes off


see if the signal coming to the monitor is active...
you can check this be disconnecting the rs232 cable from monitor to cpu..
when u disconnect it.it will display the no signal icon on the monitor...else there is some problem with your monitor...

Oct 29, 2008 | Computers & Internet

2 Answers

Green light continously blinking in samsung sync master 753s


1. cpu problem. why because of there is no signal output from cpu to monitor. the led blinking means there is no vertical, horizontal signals from cpu to monitor.

2. your monitor connected to another system.

3. neck board dry points.

4. cheak the display cable. 13&14 pins are horizontal, vertical signals.1, 2, 3 pins , R G B , 6 ,7, 8 pins R G B ground ( coaxiler cable used , meshed wire is ground )

Oct 13, 2008 | Samsung SyncMaster 753S 17" CRT Monitor

1 Answer

Can't find video signal


If screen says "Signal cable not connected " all the time till power led switches to Amber chances are monitor is ok and problem is with graphic card or cpu.Connect to Known working CPU and confirm that monitor is the problem.
If same problem persists on another working cpu after changing signal cable,the interface board in the monitor could be defective.
Samir

PLease rate solution and provide feedback.

Jun 09, 2008 | BenQ FP731 17" LCD Monitor

1 Answer

Monitor Acer Problem


I agree it isn?t the monitor but I would suspect the video card you are connecting it to or the PC itself. Generally if a monitor doesn?t detect a video signal it will go into hibernation mode, typically displaying a no signal warning and changing the LED color from green to amber. When you start the computer is anything displaying at all? Are you sure the PC is powering up and booting?

Jul 22, 2007 | Acer AL1916W 19" LCD Monitor

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