Help/Advice: PC Power Up/Down Loop BIOS and Windows.

[Avago-Earo]

Now it's randomly switching itself off and on

I already told you what the problem is, back on the previous page.

I don't know how I missed that. It does seem more likely. Sorry, I missed your post or somehow didn't take it on board.

There has been some useful posts here.

Cheers!

[Avago-Earo]

Repeated my post somehow. Don't know how to delete it.

[Avago-Earo]

OK. I don't think this is the Windows 10 'Boot Loop' that I found on google about the subject, as although this happened after clicking on Windows Update (on 8.1) and getting message like 'Preparing Windows 10' or similar it didn't actually install win10. But it did keep shutting down and starting up. No blue screen or message, just as if it was physically being switched on and off with the case button.

Because I'm new to self build PC (built a year ago, running fine recently added ASUS STRIX 970, ran fine), I was worried about something shorting and damaging the components and/or Motherboard, so I switched off the power on the PSU rocker switch.

When I switched the PSU back on the next day the PC booted straight up without my having to turn it on with the front On/Off button. So my guess is that there is a fault like a wire shorting on the power button or something conductive getting in there, and hopefully can (when I get one) put another switch on the header to solve this but as a year young noob I don't want to damage it thinking about electrical shorts elsewhere and the like.

The Mobo Light is on and the POST Beep is the normal operation one.

Sometimes it happens at the Boot stage and other times Win 8.1 loads up then shuts down after a few minutes(It says 'Shutting Down' and not 'Restarting', returning to the On/Off Cycle.

My System: MOBO: ASUS Z87-K, CPU Intel 4th G i5 4460 3.2 GHz, RAM: 8GB DDR3 (4X2), GPU ASUS STRIX GTX 970 4GB (3.5!!!) 1HDD, 650 Watt PSU,. Windows 8.1 (Basic Version)

*SOLVED* Got a new case as I suspected something to do with the switch. Also got a 80 Plus Bronze Certified PSU to be on the safe side.

All working now.

[GlobusDiablo]

*SOLVED* Got a new case as I suspected something to do with the switch. Also got a 80 Plus Bronze Certified PSU to be on the safe side.

All working now.

Awesome! Congrats buddy!

[Zadkiel]

I suspected something to do with the switch

You're.... welcome?

[Avago-Earo]

I suspected something to do with the switch

You're.... welcome?

From paragraph three in my original post: "When I switched the PSU back on the next day the PC booted straight up without my having to turn it on with the front On/Off button. So my guess is that there is a fault like a wire shorting on the power button or something conductive getting in there"

Cheers all the same and thanks to all the other Cmdrs with their useful advice. It could have been anything so I've made a note of all the different posts for future reference if something similar happens.

[TorTorden]

I once washed the engine on one of our personell cars in my service days, and some minuscule drops of water got into the distributor cap and or on the spare plugs.

That was a funny drive back having half the pistons firing not at all or randomly firing

All for trying to diagnose why it was consuming so much motor oil.
For every 10 km that car drove it would need a liter of new motor oil, being a VIP/personell transport chauffeur I would refill the oil at least twice a day..

luckily the car was leant out to a "know it all" of an ensign one weekend, and I told him of the car had this quirk and there was a fresh bottle in the boot. Naturally he didn't mind my warning since privates ensigns don't listen to privates so the engine seized on him in the middle of a tunnel

Goodbye piece of shit car..
You should have been used for target practice.

[GlobusDiablo]

...Goodbye piece of shit car..
You should have been used for target practice.

Mm. So what exactly was the lesson from that story?...