Pc Not Turning On ----- or when it decides to

conuk

conuk

conuk

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Ok bit of a long one.

Current spec

Cpu : 5800x
Motherboard (1) Aurus X570i Pro Wifi
Ram : 2 x Corsair Vengeance LPX
PSU Corsair ax 850
RTX 2080super

All working fine apart from powering off. If I power off and hit case button computer turns on- If I leave off overnight (or a period of time) - Doesnt turn back on. Flick switch on PSU and PC was turning on.

I then bought some new faster memory from forum.
Popped this in and got no bootup - assumed it was due to BIOS settings (fans powered on - no Display)
Took everything out - flashed bios - tried 1 stick - older ram etc no display.

Decided to order new board
ASUS ROG Strix AMD X570-E GAMING WIFI II, AMD X570, S AM4, DDR4, (board 2)
popped everything in - newer faster ram 2 x 16gb Ballistix 4400 (currently running at default new startup 2600)

was just setting everything up - getting ready to reinstall windows and PC is now not starting again from turning off.

If I jump the pins on the board it starts
(have also had a new switch panel from LlianLi as I originally thought that was an issue)

seems I might have bought a board for no reason - although I did want to go for atx instead of matx.

Is this a power supply issue?
If so why is everything running fine when on - its just at power on times - or overnight?
(when off board is still lighting up with RGB)
and when I'm trying to turn on.
 
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actually - just turned off now.
Hit power button - nothing - flick switch on PSU off and on ..... PC boots...

PSU issue?
(might also have an aorus z570i with no issues now)
 
Sounds like a short somewhere the best thing would be to build it outside the case with minimal components.

It could be the Psu but need to rule out the shorting also.
 
Thanks will try that - if it is a short --

how come the pins start up the board?
but not the switch? (2nd switch essentially from LlianLi... and is only power switch connected to header - no others like LED, doesn't have a reset switch)

Have also got a Corsair 550 watt PSU

assuming that has enough power to use?
 
conuk said:
Thanks will try that - if it is a short --

how come the pins start up the board?
but not the switch? (2nd switch essentially from LlianLi... and is only power switch connected to header - no others like LED, doesn't have a reset switch)

Have also got a Corsair 550 watt PSU

assuming that has enough power to use?
Click to expand...
The pin thing makes me lean towards the Psu but just ruling things in or out.

The 550w would do for now to test , let me know the result
 
Yes possiblyPSU, it's possibly a capacitor failing. They can do things like this, need to fully discharge before working which is why you have to disconnect the PSU from the mains (effectively doing that via the switch) before it'll work. Once it's on it'll charge up and work, then when you power it down something goes wrong, doesn't discharge or throws some logic in the circuit until it's disclonnected again.

Maybe......but certainly try a different PSU if you can borrow one from somewhere.
 
So to update.

There's 3 connectors for the power to the board.
The usual 24 pin then an 8 pin and 4 pin.
Manual says use 24 pin of course... 8 pin or 8 and 4...confusing?

I removed the 4 pin and has turned on and off repeatedly all this afternoon.

Now the ram defaults to 2600mhz.
Enabling the equiv to Xmp states memory at 4400mhz but then failed to boot. That's for another time I think!


Proof will be overnight I guess.
 
conuk said:
So to update.

There's 3 connectors for the power to the board.
The usual 24 pin then an 8 pin and 4 pin.
Manual says use 24 pin of course... 8 pin or 8 and 4...confusing?

I removed the 4 pin and has turned on and off repeatedly all this afternoon.

Now the ram defaults to 2600mhz.
Enabling the equiv to Xmp states memory at 4400mhz but then failed to boot. That's for another time I think!


Proof will be overnight I guess.
Click to expand...
8 pin eps is needed the extra 4 pin is for extreme overclocking.
 
So after turning on and off yesterday multiple times.
Today (overnight) rgb lights on board.
No power on from switch.

Have a psu delivered today so will try that.
2 boards and 2 lots of ram later.... Will try PSU.

Never had a shorting out experience though in all my times of building 20 or so pcs.
 
Hi all.

So ordered a new Power Supply (havent fitted it yet)

Also ordered another power switch / reset switch from the bay.

Have changed nothing else other than the switch and been working fine for 2 days.

So either there is something 'shorting' out when the 2nd LianLii switch is connected This was a replacement sent out (15 days!) ... or it just has not happened since and lucky.

Think ill return the PSU and see if this switch works ok.

Surely cant be 2 faulty Case switches !?

K0rZ4ae.jpg


BFPZrUN.jpg
 
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I don't.
Didn't turn on this morning after 2 days of working.

Will take board out and see if there's any spare standoffs in the way.

So
Different board.
Different switch
Different ram
 
You can get a multimeter for less than £10 on eBay which will be good enough for almost anything you'd need it for.

This issue aside it's a useful thing to have in the house.
 
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