Clearing bios using jumpers is the only way my PC |
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elliotvm
Newbie Joined: 21 Feb 2017 Status: Offline Points: 5 |
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Posted: 21 Feb 2017 at 3:29am |
Asrock Z270 ITX/AC
Intel i5 Big Shuriken 2 rev b
Fan starts spinning as soon as psu is turned on without pressing power button or touching pins. I have tried 2 different PSU's same problem Cannot manually start or shutdown pc either, have to do so via the back of psu. If I clear bios with jumpers before turning on PSU, I manage to reach bios where it recognises my ram sticks, cpu and fan. Can anyone help me understand/fix thanks |
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Xaltar
Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 23048 |
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Please list your full specs as well as making note of any old/reused parts.
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elliotvm
Newbie Joined: 21 Feb 2017 Status: Offline Points: 5 |
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CPU: Intel Core i5-7600K 3.8GHz Quad-Core Processor
CPU Cooler: Scythe BIG Shuriken 2 Rev. B 45.5 CFM Sleeve Bearing CPU Cooler Motherboard: ASRock Z270M-ITX/ac Mini ITX LGA1151 Motherboard Memory: Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-2133 Memory Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive Video Card: EVGA GeForce GTX 1070 8GB SC GAMING ACX 3.0 Black Edition Video Card Power Supply: Corsair SF 600W 80+ Gold Certified Fully-Modular SFX Power Supply Also tried a g3 550W psu - same problem All new parts
Edited by elliotvm - 21 Feb 2017 at 4:04am |
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Xaltar
Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 23048 |
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parsec
Moderator Group Joined: 04 May 2015 Location: USA Status: Offline Points: 4996 |
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Assuming you have the Z270M-ITX/ac board, a Z270 ITX/AC board model does not exist.
Adding to what Xaltar said, is the PC case new and what model? Did you check the connections to the System Panel header from the PC case? That would be the wires for the Power Switch, Power and HDD LEDs, and Reset switch? Is the polarity ( + and - ) correct? Did you check the power switch on the PC case, that it is working properly and not stuck in the "On" position? |
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wardog
Moderator Group Joined: 15 Jul 2015 Status: Offline Points: 6447 |
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After reading that I'm assuming this is a new build. Please check the wiring coming from your case and attached/connected at the MB's System Panel Header. Edited by wardog - 21 Feb 2017 at 2:24pm |
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elliotvm
Newbie Joined: 21 Feb 2017 Status: Offline Points: 5 |
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Hello, yes it is the Z270M and a new build.
I am currently breadboarded, as soon as I turn the PSU on via the switch at the back, my fan automatically starts running without me powering on the PC. I think my motherboard might be faulty as the PC wont shutdown via the pins
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