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Computer powers up, MONITOR says no signal

Allcables are good and correct. The mother board seems to be ok. All fans come on,hard drive gets warm, DVD powers up, but sounds like the disk will not spin. Front panel power button will not shut unit down, have to use power swith on back panel. The computer does not seem to recognize any exterior devices, key board, mouse, eathernet cable, speakers,OR MONITOR: NO SIGNAl. I am useing a WORKING monitor,a HP f1523h. With no signal I have no info to work with. What can or should I do.

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  • Jemuel Osorio Sr.
    Jemuel Osorio Sr. Nov 07, 2016

    Your computer have a power when you switch the on but the motherboard and the Processor are not working. That's why the keyboard and mouse and other phereperals are not working. If you can able to open the casing of your computer can you remove the memory and clean it by eraser and insert again to the memory slot. Also if you have another PCI external card like Video card can press it to insert them properly. I hope i can help you

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  • Expert
  • 64 Answers

Had same problem...re-install windows ...bad drivers and such
worked fine after that

Posted on Mar 31, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

exspert
  • 55 Answers

SOURCE: Computer Won't Boot (Anything?)

ok sounds like a bad power supply , i would get a new one

Posted on Jan 21, 2008

Bubbabear64
  • 2794 Answers

SOURCE: amber light on power button

Check to see if there are any loose connections to the memory cards on the memory board. Make sure the data cable to the drives are connected properly. Is the fan in the power supply on?

Posted on Jul 27, 2008

  • 166 Answers

SOURCE: No video signal to Monitor.

Lack of video signal is usually 1 of 3 things, Power supply (PSU), Video card or Motherboard (mobo).
Situation #1: If you get a blank screen and no sounds or movement it either indicates that the power supply unit (PSU) has failed or something on the motherboard has failed, preventing normal startup.
Situation #1A: You might get some power lights coming on and some fans spinning but the video output does not happen, usually indicates that motherboard is going out or has gone out. Ocasionally it will be due to a weak (damaged) PSU.
Situation #2: If you get sounds and lights but nothing on the screen then it indicates a failed or loose video card.
Always try a different power outlet that you know is working. (Eliminate the easy stuff first!)
If it is out of warranty, try opening up the case, with the power off, of course. If you have Sit #2 and have a video card that you can reseat (take out and then put back in) try that. If it is onboard video then you may have to buy a video card for it.
Also take this time to inspect the capacitors on the motherboard (they look like tiny soda cans) and check for tops that are bulging, swelling or leaking anything. Capacitors should be perfectly flat on top. If you find these then your motherboard is bad (well technically the capacitors on your motherboard are bad). The bad caps will need replacing to fix (not a job for an amateur). If it passes the visual inspection then it may just be your power supply is bad. Notice that a bad PSU does not mean you are getting no power, just not enough to start and run the computer.
A few years ago a company stole the recipe for making capacitors and started making their own capacitors at really cheap prices. The stolen "recipe" was not complete and not correct so these caps started failing after about 2-3 years of use. Emachines, DELL and Gateway were the computer companies most affected by the bad capacitor issues, although any of the big companies could have the same problem. Power supply maker were also affected by these bad caps.
Do you hear anything during startup, beeps, fans or drives spinning, lights on the front or back of computer flashing or lit up? Do you hear the Windows starting sound?
Let us know more then we can troubleshoot better.

Posted on Mar 26, 2009

  • 644 Answers

SOURCE: My HP Pavilion a6300f powers up but no signal to the monitor

It could be the motherboard, try resetting the the bios first by either taking the lithium cmos battery out and then replacing after 30 secs or finding the the cmos jumber and unshort it for 30 secs, and reboot the mechine.

If the same and no monitor responce then the onboard graphic electronics may have failed, the motherboard does have a AGP expansion slot which you may want to test with a graphics card to see if that will work.

If you find that you do have to replace the motherboard, try to find one that uses the same processor and memory that you already have, that way you will keep expence down to a minimal.

Replacing the motherboard will mean you will have to contact microsoft to give you the installation codes for the operating system to work with the new motherboard, when you boot for the first time with the new motherboard fitted you will have to phone the number on the screen to reregister the system just follow the instructions, it is quite self explanetry.

Once all booted up and drivers installed the computer should run as normal, as for the hp recovery disks it should still work as all the information on the disk is on the harddrive any way, the only thing you would need to do is keep the motherboard installation disk with all the drivers on.
hope this helps.

Posted on Mar 23, 2010

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  • 181 Answers

SOURCE: I got a dell optiplex

I recently worked with a couple of used Dell desktops that someone got from work. Sound familiar? I couldn't get them to come on because the plastic bracket that holds down the CPU heatsink was broken. The heatsink was also covered with a carpet of dust. The new owner could've bought a new heatsink/bracket online, but they declined to spend money. Open it up, make sure everything is in order to diagnose the problem.

Posted on Aug 15, 2011

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