System shut down overnight and won't boot, but mobo still lights up

wader

Honorable
May 8, 2014
13
0
10,510
Hi Folks,

Summary
I built a PC system for the family half a year ago and it's been working great until this morning - we found it silent and not responsive to the On/Off or Reset switches on the case.

However, the motherboard and USB-powered lights are still on, as are the case switches.

No fans will turn on now, including those of the power supply. Clicking the case power buttons causes no changes, visually or otherwise.

Recent history
It was working every day since last December, going into sleep state and waking up again easily (no Hibernation).

Last evening was the first time installing the Blizzard app and then playing Overwatch on the system (a birthday present), then the Bluetooth keyboard died so we stopped playing, connected that to a wall charger and finished some work on the system via Windows 10 virtual keyboard, then printed a paper via network printer and let it go to sleep at some point in the night (as it usually does).

Problem symptoms
This morning, we noticed it was not waking up at all and showed no response to the On/Off or Reset buttons on the case.

Lights are still on across the motherboard, on the case switches and in the mouse+front-panel USB 4-port extender we have plugged in.

System specs
Motherboard: Z170-AR (LGA 1151)
CPU: i5 6600K
CPU cooling: Hyper 212 EVO
RAM: 16GB (2x8GB) Crucial Ballistix DDR4-2400
Power supply: Thermaltake TR2 600W
Graphics: Gigabyte GV-N760OC-4GD rev2.1
Storage: Samsung 850 EVO SSD
Network: TP-LINK TL-WDN4800 (N900 wireless dual band)
Bluetooth: Plugable USB Bluetooth 4.0 Low Energy Micro Adapter
Keyboard: Logitech K810 (Bluetooth)
Mouse: Evoluent VerticalMouse 4 (wired)
USB: Anker Ultra Slim 4-Port USB 3.0 Data Hub (nothing plugged in)
Case: Corsair Carbide
OS: Windows 10 Home

Everything was new except the Gigabyte (NVidia) graphics card.

Attempts to help

- Plugging/unplugging the power supply cord
- Try a different wall outlet
- Toggle the power supply switch directly
- Open the case to look for obvious connections that have fallen out of sockets, etc.

==========================================

Although it's new, my first guess was to purchase another power supply.

I'm open to ideas.

Thanks,

- wader
 
Solution
Power supply might be bad and producing a voltage that is outside of the 10% tolerances. It won't let the computer turn on if it's bad voltage. Thermaltake PSU's have continuously given me problems and I no longer use them.

jayambroziak

Honorable
Dec 14, 2012
138
0
10,710
Power supply might be bad and producing a voltage that is outside of the 10% tolerances. It won't let the computer turn on if it's bad voltage. Thermaltake PSU's have continuously given me problems and I no longer use them.
 
Solution

wader

Honorable
May 8, 2014
13
0
10,510
And, as I suspected in the original post and keenly suggested by jayambroziak (with pertinent anecdotal history on Thermaltake PSUs), replacing the Thermaltake with a Corsair CX650M worked a treat.

Thanks!