When i switch on my system for first time the system is not switching on then.. i mean when i switch power button on my cabinet the cpu fan and power is getting on but the display is not coming then i switch off the cpu and immediately iam switching on the cpu then for second time the system is working normally.. once i shut down the cpu and then if i start the cpu again same problem my system is not getting started again i have to switch off the cpu and then i have to switch on the system it is irritating me alot so please help me out some one thanks in advance.......
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Your computer should be switched off at the plug only, the switch on the computer power supply can remain on. No damage will occur. This means that to turn your computer on all you need to do is plug it in, power on at the plug and then push the switch on the computer to turn it on.
I have seen this problem before, I am not sure if it the power supply that is causing this problem. I use Cooler Master they perform well and are priced right.
As with all motherboard troubles testing for an issue means trying one thing at a time. On the back side of the power supply is a little switch. Currently this switch is set to ON, flip it to off. Open you're case and find the cmos two pin jumper. Check you're manual, see page 16. Follow instructions to clear the bios. While you're case is opened re-check all power cables from the power supply to motherboard.
Flip the power supplies switch to the on position. Try booting up you're system. Listen closely for, POST = Power On Self Test. By clearing the bios you set the bios to its default settings. If you’re system still doesn’t boot than again power off the power supply. Try removing all memory except DIMMA_1 and DIMMB_1. (See page 9). If the memory being used is not dual channel remove all but one, (DIMMA_1) memory stick. Switch the power supply switch back to on and boot the system. If you’re system boots than there might be a problem with the system memory. You can download memory testing software at http://www.memtest.org/Memtest86+ V4.00 (22/09/2009).
Try the above and get back to me by adding to this question.
what you should do? here is what you do.....a simple idea....replace the CMOS battery and 100% it will work good...it will not bugging you everytime you open the pc....check,i need to share only my experience.
Explain what you mean when you say 'when i open the pc from main switch'. Also, something you should try is updating the CMOS, or in other words flashing the BIOS firmware. Go to your motherboards manufacturers website and see if there are any BIOS updates for it.
it could be your power switch, veriy that it isnt the power supply by
1.) un-plug it from the main board
2.) look at the main board connector(one coming of the power supply)
3.) you should see green wire and next to it a black one
4.) using a paper clip bridge the too wires
5.) if it works proceed to net step if not get a new power supply
to check case switch and board switch
1.) plug in power supply to main board
2.) look at the pins where the power button connects to
3.) using a metal object (blade screw driver) bridge the pins
if the board should start up>
then its your power button on the case that is bad, you can try to repair it, chage it or buy a new case,
if it doesnt work.
1.) ensure that jcms(jumper to flash the bios) is set correctly
2.) unjack each drive one at a time to see if any is causing stalling
3.) get a new main board