PC does not acknoldge on/off button. I have changed power cable and checked all power switches and buttons.
Before this I had difficulty shutting down the PC and also if you held the on/off switch in to reset there was no response.
It seems your motherboard doest get powered or your on/off switch is not working.
please check the power supply if its fan is working ,if it is working please open your PC's cover and you can find the power switches on the motherboard. i want you to shortcut the power pins.
how you can find them ? you can see these pins at the corner of your motherboard . if you can find and shortcut the pins ,and if your power supply works ,then i think problem is your motherboard. you should replace it .
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if your PC have restart button then open your PC and check the power cable slots and change them into a reset mode removing reset cable to reset slots and attach to power slot. Then you can power your pC with reset button.
If you can open front case then you can outside the button .
Are you saying that when you press the power button your your desktop pc, and nothing comes on at all? Or is it that the computer does turn on but nothing appears on your screen??? If you recieve nothing at all when pressing the power button on your desktop... Then you may want to assume that it is the powersupply. But before that, check for power cable connection to see if it is loose and fully pluged in. In some computer there could be a switch behind the computer where your power cord plugs which is the power supply and it might be switched to off. If not check to see if the powerbutton is loose, or sticky. If it is, that might trigger to computer not to turn on, and if everything seems okay.... then it is your power supply which had died. But if your computer does turn on and can hera the fans blowing, then you might have couple of cause that causing the computer not to boot probraly. If you can a change explain it in more detail please.
Disconnect all cables from the computer. Press and hold down the power button for about 20 seconds. Reconnect only the power cable and try to turn on the computer on pressing the power button If it turns on then good otherwise, switch the power cable of the computer with the power cable of the monitor as they are the same cable as the power cable could be bad but this rarely happens. Open the computer and see if you see any light on the motherboard, if you do then the power supply is bad. If you dont then both power supply and the motherboard could be bad.
Unplug the power cable from the back on the PC. If your ok with opening up the case, remove the side panel and then the front cover where you can see the power button, don't pull too hard. Check to see if the wires are broken. If not, try clicking on the power button from the inside to turn on the pc.
If your computer is not switching ON you can try the following in order
1.you have to plug the power cable properly then try changing the power cable.
2. Check C P U power Button is working this can be done by opening the cabinet and switching the computer on by touching the two power button front panel pins on the motherboard with a screw driver if the computer gets started then it is the promblem with the power button in the cpu
3.Try replacing the SMPS with a new one
4. Finally change the CMOS Battery
check the connectors to ur moniitor...from PC box...
also do this....
power off the machine
switch off power supply/remove power cable from wall outlet.....remove the power cables...from PC power slot.......keep pressing the power on button in the PC for 3-4 mins....WITHOUT POWER....and/or
press the PC switch on button and release it after few seconds many times.....
Power in RAM is locked...and it's locked ur Windows DLL files....
This is typical of a failed power supply. Look on the back of the power supply, there may be a red switch for input voltage. Unplug the power cord, flip that switch a few times and then plug the cable in and try again. If nothing changes, see if there's a small black button on the back of the power supply. If there is, unplug the power cable and press the button and hold it for 10-15 seconds. If an LED flashes or turns on, then plug the cable back in and try again. If this all fails, replace the power supply.
First things first:
1) You just change the power on button for other, on Radio Shack they have it.
2) cables that came from the motherboard to the ON/OFF SW. you have to soldering with the new Power Button, thats it. very easy task! you can use any power botton to fix this.