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Rampage V Extreme power dropout

Spiritwolf
Level 7
Shutdown with no apparent reason

Motherboard model: ASUS Rampage V Extreme

UEFI Version: 1701, Bios 3202
CPU: Intel Core I7-6800K
Memory kit part number (s) and amount in GB: 8 – 64GB (KINGSTON HX426C15BK4/32)
GPU: AMD Radeon 6700
SSD/HDDs/Optical drives: ROG RAIDR PCIE 240GB, Seagate 3TB, 2 x LITEON BR writers
PSU: Corsair AX1200i
USB Devices (model/version number): Generic keyboard, Wireless mouse
Monitor: Viewsonic VA2238
CPU Cooler: ID Cooler 240mm Closed loop Water cooler
PC CASE: Corsair 900D
Operating system: Microsoft Activated yes/no? Install not possible (see Issues)
Drivers Installed (include version): As Above
Any third Party temp/voltage software installed: No
System Overclocked (provide details)?No


Issue

Purchased and built on 21/07/2016

System boots up, Monitor wakes and runs through bios, loads windows installer and starts install.

CPU Temp 25 deg. Full GUI. Mouse, Keyboard operational. Shutdown for no apparent reason.

Tried BIOS 1 and 2, Time before shutdown reduced from 5 Minutes to under 1 minute on subsequent tests.

Left idle or overnight and time increased on first start then dropped.

Actions taken:

Removed all but 1 stick of RAM with no change, swapped RAM stick, no change.

Used Known good PSU 750W Thermaltake Toughpower, no change.

Removed CPU & checked for bent pins or heat damage. None found. Reinstalled and retested with same results.

Unplugged power switch after start to eliminate faulty switch. no change.

Plugged PSU comms (C-link) into another computer and found no issues.

PSU runs Gigabyte M/b graphics and PCI SSD all day with no problems.

Removed from case and benchtested, PSU, Graphics, HDD 3TB, ODD. No Changes.

Any help is appreciated, thinking it is a RMA.
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2 REPLIES 2

Nightflight
Level 7
Hye,

I had the same issue with BIOS 3202. Go into your BIOS settings and disable CPU Spread Spectrum. Or go back to BIOS 2101 where this setting is disabled by deafault. Also take a look here http://rog.asus.com/forum/showthread.php?85910-Random-power-losses-on-R5E/page2& and here http://rog.asus.com/forum/showthread.php?85892-New-BIOS-3202/page9&.

You are not alone with this. Since I disabled it, I had no power losses anymore.

Nightflight wrote:
Hye,

I had the same issue with BIOS 3202. Go into your BIOS settings and disable CPU Spread Spectrum. Or go back to BIOS 2101 where this setting is disabled by deafault. Also take a look here http://rog.asus.com/forum/showthread.php?85910-Random-power-losses-on-R5E/page2& and here http://rog.asus.com/forum/showthread.php?85892-New-BIOS-3202/page9&.

You are not alone with this. Since I disabled it, I had no power losses anymore.


Hi Nightflight,

Just a quick thanks. I had the motherboard RMA'd as even the shop came to the same conclusion. Replaced as DOA.
New MB worked out of the box. Still, i used your suggestion and disabled the CPU Spread Spectrum.

Col