Computer Turning On & Off

[techguy31]

So my motherboard is acting up when I plug a keyboard or mouse in the backside of the motherboard io. It could be plugged into any of the USB and the computer will turn on and off. Funny thing is, if I plug it after it boots up in the back io, the computer is fine, but if I restart the computer or turn it off, it will turn on and off again. Now, if I plug the keyboard or mouse in the front io, the computer wont act up.
So my question is why does it do that. I just updated to latest bios and installed the USB 3.0 drivers, but am unable to install choose driver. What's the deal with my computer. Any help would be appreciated.
My build
Mobo: Asus maximus impact vi
CPU: 4770k

 

[Thefumigator]

Seems to me there's a bad ground. Its an electrical problem not a software or bios problem. Try disconnecting all usb ports from the case, check the ports in the back for something irregular (like somebody forced a USB port by plugging something the wrong side)
Also it could be the motherboard too. But I would check the ground first.

 

[Jetster]

What country and what power supply

 

[eidairaman1]

Bread board the system and verify if it still does it, try another keyboard and mouse, unplug all other usb devices too. Reset cmos...

 

[techguy31]

Problem still persists. When I clear CMOS by pressing the button in the back everything goes back to normal. So, this just happened for some reason the computer restarted and because my mouse and keyboard were plugged in the back IO, the computer turned on and off. So I had to press the CMOS button in the back and that managed to stop the looping. Do you think its just a faulty motherboard? The problem is very irritating.

What country and what power supply

Can't be power supply. Tried on 2 power supply and still same thing

 

[infrared]

Problem still persists. When I clear CMOS by pressing the button in the back everything goes back to normal. So, this just happened for some reason the computer restarted and because my mouse and keyboard were plugged in the back IO, the computer turned on and off. So I had to press the CMOS button in the back and that managed to stop the looping. Do you think its just a faulty motherboard? The problem is very irritating.

I'd definitely give a different keyboard & mouse a try as airman suggested. They definitely sound a bit suspect.

 

[Jetster]

Still could be bad power. Check your event log

 

[eidairaman1]

Short in the case can cause this too. Breadboarding can help isolate issues...

 

[techguy31]

Short in the case can cause this too. Breadboarding can help isolate issues...

So how would you go about grounding the case and motherboard and usb?

 

[johnspack]

You don't need to ground those.. take the motherboard out, put it on cardboard, preferably with an antistatic bag underneath, and just connect the psu and mouse and keyboard and video.
For the usb, just make sure the contacts in the ports aren't shorting out any more!

 

[eidairaman1]

So how would you go about grounding the case and motherboard and usb?

Look at my signature and just do what you are told. No explanation required, just do it.

 

[R-T-B]

Look at my signature and just do what you are told. No explanation required, just do it.

That's... not really how you teach anyone anything.

 

[Vayra86]

 

[rtwjunkie]

You don't need to ground those.. take the motherboard out, put it on cardboard, preferably with an antistatic bag underneath, and just connect the psu and mouse and keyboard and video.
For the usb, just make sure the contacts in the ports aren't shorting out any more!

While good advice generally, it is better to lay out the motherboard on cardboard (without any markings) or on wood. Putting things on an anti static bag is not good, as the outside is designed to be staticky while it is the INSIDE of those bags that is meant to be anti static.

 

[eidairaman1]

That's... not really how you teach anyone anything.

he was looking for helping suggestion so I gave him a suggestion

 

[R-T-B]

he was looking for helping suggestion so I gave him a suggestion

I know you were trying to help man you just came across a bit rude the way you said it. I'm sure it was unintentional, all good.

 

[CAPSLOCKSTUCK]

So how would you go about grounding the case and motherboard and usb?

Your PC is grounded through the PSU


When i breadboard my pcs i use wood and lego.....belt and braces

 

[Vario]

Sweet DFI ^

 

[Final_Fighter]

check the power button. they do go bad.

 

[FreedomEclipse]

20th posts in and we still don't know what brand powersupply the OP is using or the ones he swapped it with but yet OP denies that its what's causing problem.

Well OP if you were that well seasoned of a troubleshooter you wouldn't of needed to make a thread and ask for our help.

The information you've given is so vague that the youre wasting everyone's time and also your own by not answering everyone's questions and also not following our instructions when we advise you to do something.

You obviously think you know better than everyone else because you switched powersupplies yourself but your powersupplies could be made by some guy with one eye, missing fingers, and missing teeth that lives in a ditch.

Unless you answer our questions and help us help you. I will ask that your thread be closed as you're not here for advice anyway

 

[Vario]

check the power button. they do go bad.

I had this issue on a build I was troubleshooting. Lots of random reboots and shutdowns. Power button was full of sticky residue like soda or something. I flushed it out with Deoxit or something similar and got it working smoothly. Of course if completed build is run naked outside of case and still having the problems, this wouldn't be the issue.

 

[techguy31]

Thanks for all the input. So I switched off between 2 different corsair ax1200w and finally settled with using an ax850w. Trust me it's not the power supply. Also I did take out the motherboard as you guys instructed and it still has the same problem. Honestly I think I just can't use the back of the motherboards USB. I can use it if the computer is on but, I will have to immediately take it out if I wanted to turn the computer off or restart.
I honestly think it's just the motherboard that is the problem.

 

[jaggerwild]

Why ask for help then try to educate us on what you think it is?

 

[eidairaman1]

Try other usb devices, if it does exactly the same thing bin the motherboard.

Even switch the reset switch to power header on the motherboard (sometimes power switches get weird issues internally)

/thread

 

[Thefumigator]

Why ask for help then try to educate us on what you think it is?

Maybe because out of all possibilities, he already found out that the power supply isn't the one to blame... as all he tried out from our suggestions