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Re: no beep no visual but fan is running
Remove all other units attached to the motherboard and try to boot in the BIOS - if you can then the hard disk has died, replace it. If you can't replace the processor and try again - if you can't then the motherboard has died, replace it.
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your monitor has no problem, its your cpu. Try to hook your monitor to your laptop,and change the display setting to your LCD monitor.
If LCD has displaying no signal mean signal coming form the Video card of your CPU
try to visualize if you hearing some beeps into from CPU, some motherboard has beep codes
if there's an error or failure to your CPU, 1 beep means its good system test.
if you don't hear any beeps, try to check first your Video Card
if you have Spare try to replace it, try to reset all the connectors even Memory card to its slot.
reset means pull the connectors and place it back again,
also check the power supply of cpu if still functioning good.but you can test it by multi volt meter.
if nothing happens check your motherboard most common failure is bloating capacitor, and overheating chipset.
thanks....................hope this helps...................
Is it possible to try the monitor on another computer? If so try that. I've worked with motherboards that don't give a power up beep code (strange, I know), so after the checking the monitor, I would try removing and re-seating the video card, and memory, one at a time and see what happens. Is the cpu fan running? Check these things out. Is there onboard, integrated video in addition to the graphics card? If so, try using the integrated video port. If the cpu fan is running, and the power led and hard drive leds are working, then it's a safe bet it's not your power supply. It would have to be the video card, in my opinion .
leave only the motherboard and power supply connected. power on. listen for beeps....then put in the processor, check for beeps, memory, then video card,, then hard drive. test power supply voltage, or try with a known working power supply. if you still cant find the problem its most likely the motherboard
Could be 3 things Memory or CPU or Powersupply. are you getting any beeps if so how many, how long. try taking all the memory out and powering up see if it beeps if so try to put one stick of memory in at a time and see if it will boot. if you get no beeps with memory out check powersupply some PS's have a red switch on back for current input. switch back and fourth about 20 times uning a pen and set it to the right current for you location. put ram back in see if it will boot if not its trial and error of the PS and the CPU replacement and it still could be the RAM giving false readings. yea i know sounds like a ball of fun.
A fan turning on IS protecting something from OVERHEATING, more than likely the pc needs to be cleaned on the inside (blown out) especially the fans..
If the fan is coming on while the computer is being used, it's trying to cool down a hot component.
a fan should not strain the system,
this can be caused by adding a high end video card and not updating the power supply to needed voltages.... but from the factory, the power supply should be more than enough to run the system and fans without getting overused. sooooo........
1. pull the side off your computer
2. listen to the fans as they run
3. inspect them physically for dirt and freeness
4. check the powersupply, videocard, cpu and case fans..
Here was the fix for me. The machine refuses to boot if the video card is not functioning. It should have one long beep however to tell you that there is a video problem. Someone hooked up our speaker incorrectly though! So we got no beeps. Once the speaker was hooked up and the video card was replaced, all is well!
how to fixed your motherboard no display and no beep, 1st you must clean your memory using eraser and brush for painting if not display again try to clean your video card if have a video card using again the eraser and painting brush if not display again try to pull out the bass in the cdrom and floppy disk. if not display you must replace the memory and video card., if not display try to change your motherboard. The beep put speaker in the motherboard.. gudluck guys