My cpu had a light spark ad then turned off.
i checked the power cord ,its working because monitor gets started when we swicth on the system but cpu is not even showing any l.e.d (any light)
when i press the power button on cpu its not working ,not even showing led .
no led or usb drive showing power even cd roms and floppy drive not showing light
fan does not start even when power plug is on
i m using p4 and its agp 8x/dual channel ddr
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Re: cpu cannot boot
Hi, the most likely place(s) where a spark could occur on your motherboard would be near the processor where the big transistors are, the capacitors. Such if it were the case would mean that your motherboard is most likely fried and therefore would require replacement. Check if there are any burnt marks or try to smell the motherboard. Arcing (spark) would leave a telltale burnt smell within the immediate area. Another likely place would be the capacitors themselves (3300uF/6.3V or something like that). Normal capacitors would have flat surfaced end with an indented X or T mark. If any would show a bulging, cracked, open or blistering open, then chances are they are busted, leaking, shorted - all meaning motherboard replacement. Aside from the motherboard, it might be that the power supply itself is defective. Normally (but not always) spark/arcing would occur in the hotside (the one directly connecting to the mains). You are probably better off buying a new PSu rather than have it repaired. In some cases, PSU with on/off master switch at the back have been known to have arcing/sparking problems. In this instance, switch replacement is possible without replacing the entire powersupply. In extreme cases, the said switch can be left out (removed) and the two wires going to it just twisted together and taped. Again this is on the hotside. If you are not comfortable working with power supplies, may I suggest you ask a competent service personnel to do the repalcement or removal and shorting. Hope this works out for you. Cheers.
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please check on cables connecting the monitor to your tower/cpu. make sure both ends are plugged in tight. check on the monitor power light aswell, if its blinking or not, if the monitor has been more than 5years old too, its possible thats already dead computers have a life time too especially the old models.
Unplugging the power cord repeatedly is not a good idea! I hope this helps:
1- After you get a picture, go to "Device manager" (Click on Start-Programs-settings-device manager) and make sure that there is not question or an exclamation mark next to Monitors. If that is the case you might need to reinstall the driver!
2- Make sure that your video card is not faulty by hooking up a different monitor and see if it is working ok. If you still have the same problem, then you need to replace the video card.
3- Check all cables and power cords and make sure that there's good connectivity on all ends (before powering up the machine) and that there are no nicks or cuts. If possible try replacing the monitor's data cable as well.
If the light (yellow or pink) is flashing, your monitor is well. It's your CPU that is not giving a video signal to your monitor. Try to reset and notice if your CPU beeps. If it doesn't beep, then there is something wrong with the CPU... or the CPU's speaker.
you have to narrow down the issue.. is it with the pc? or monitor? if you think the cpu... is the power supply fan working? is the cpu overheating? if you think its the monitor...be sure the card is seated properly and check all cables
1) The flashing light and signal message indicate that the monitor is functioning but is not receiving a signal from the computer.
2) The memory that you added is liklely to be incompatible with the computer itself and is preventing the system from booting. The computer will perform a selftest when powered on. Normally when there is a memory issue, the unit will beep. In some cases, there will be no action.
Remove the added memory and attempt to boot the system. If it starts up OK, then the memory you have added is the problem.
I turned on my computer and the monitor displayed this message on the screen "going to sleep no input received". I checked the power cord and unplugged it, nothing. No lights are flashing or beeping sounds. The CPU is working just fine, anyone have any idea what to do