after switching computer off wont' turn on

[edzha90]

Hello,

I been using computer for a while but this problem is the hardest which I ever had.
So the problem is, I have turned off the computer using my hands, like I just have removed power wire straight from PSU and then after couple hours I tried to turn on computer but it won't happened. What I have to do, why my computer won't turn on ?

[Salmon Trout]

I just have removed power wire straight from PSU

This is not a good way to power down a computer. You could have created a surge or there may have been arcing as the circuit was broken. Either of these things could have destroyed the PSU or one or more sensitive components on the motherboard.

[edzha90]

I totally agree with you, also the PSU is working (I have checked )

[Salmon Trout]

the PSU is working (I have checked )

How did you check?

[edzha90]

I tried with different motherboard.

[truenorth]

Could you please provide a few more details. Make and model of the computer? Why did you find it necessary to shut down the way you did? Operating system? What if anything occurs when you try to boot the computer? Noises/Lights/beeps/etc?truenorth

[Salmon Trout]

I tried with different motherboard.

Sounds like you killed your motherboard, or one or more vital components on it.

[kbit]

One thing you could try is to pull the battery out of motherboard{very carefully , be sure you know how} or look for cmos jumper and that will reset bios to default. i have shut down computers many times by yanking powercord and it has never hurt them.  also check all connections , reseat ram and good luck!

[patio]

It has nothing to do with the CMOS battery...

[Salmon Trout]

i have shut down computers many times by yanking powercord and it has never hurt them.

Maybe you have been lucky doing that reckless and foolish thing; but the OP has not.

[edzha90]

I have good news and bad news as well.
After couple days ago while computer was off I took off motherboard battery and then a bit later I tried to start up, and you know it's working... I am surprised
but the bad news is, after I press power button once computer has turning off straight away but when I press power button again it's booting up without any problem..

any ideas why I have press power button again ?

[Salmon Trout]

Sounds like unreliable power supply.

[edzha90]

Yeas it seems like, I tried an other PSU and it's starting up without second press, what I should do with that broken PSU ? is that still usable ?

[Salmon Trout]

what I should do with that broken PSU?

Take to recycling dump

[edzha90]

are you sure? no chance to repair ?