Strange system build behavior

[mpukas]

Corsair Obsidian 750D case
Asus X-99 Deluxe II mobo
Intel Core i7-6850K CPU
(4) Corsair Vengeance LPX 16GB DDR4 3333
Corsair RM1000x PS
Intel 750 400GB SSD boot drive
RAID 10 - (4) WD Black 2TB
Corsair Hydro H115i
Asus 16x BW-16d1HT
(2) Corsair Memory Cooling fans
PNY Nvidia Quadro M4000 video card
Thunderbolt card that came with MoBo installed
NZXT USB2.0 expansion hub installed (since this MoBo only has (1) USB2.0 header)
Windows 10 Pro, 64-bit, version 1607

Very strange behavior since build complete;

• 
  when plugging in any USB cord to any of the (2) USB3.0 or (2) USB2.0 front case ports, windows crashes. No warnings, just instant freeze of all functions, then a brief blue screen with frowny face and says Windows encountered an error, we are gathering info... then a restart with no power off. Just touching a metal cord casing to the front panel metal port casing - WITHOUT ACTUALLY PLUGGING IN - causes Windows same crash.

• 
  upon Windows restart, RAID 10 fails. 3 of the 4 disks are not recognized in the BIOS. 3 of 4 disks not recognized in Intel RST; RAID status is VOLUME FAILED, 3 disks labeled as MISSING. When doing shut-down/restart, RAID 10 is fine, all disks recognized and data is OK. Intel RST says RAID status normal.

• 
  When system is shut down, with PS power switch ON, front panel power switch and/or MoBo power switch does not power on system. Pressing either button does nothing. PS switch has to be turned OFF, wait 20 +/- seconds, turn PS switch ON, then front panel power switch and/or MoBo power switch will turn system on normally.

First thought was it's a MoBo problem. Asus would not send me a replacement board for instant RMA, so I purchased and installed a brand new IDENTICAL X-99 Deluxe II board (old board will be sent to Asus for RMA). SAME EXACT PROBLEMS happening with new board installed.

Trouble shooting steps so far - Front Panel System Connectors (power switch, reset switch, HDD LED, Power LED) are having some sort of effect. When ALL front panel system connectors are UNPLUGGED, and front panel USB connector plugged into either of (2) MoBo USB3.0 headers, there is no problem with plugging in a USB3.0 or USB2.0 cord into any front panel USB3.0/2.0 ports. Plugging in JUST ONE front panel system connector, such as Power Switch, will cause a Windows crash when any USB cord IS JUST TOUCHED to any the front panel USB ports.

Plugging in Power Switch front panel system connector in either orientation - one side is ground - does not chnage the effect on the system. When plugged in in either orientation, and touching metal USB cord casing to front panel metal port casing causes Windows crash.

Unplugging ALL front panel system connectors has NO EFFECT on RAID 10 drives being recognized on restart. System still has to be powered OFF/ON and RAID 10 drives are then all OK.

Unplugging ALL front panel system connectors has NO EFFECT on front panel power switch or MoBo power switch powering on system. PS still has to be cycled OFF/ON for either power switch to power on system.

Conclusion thus far - I'm completely stumped! Does not seem to be Windows/OS issue, seems to be hardware/system issue, possibly grounding? Possibly chasis cable issues? Possible issue(s) with PS?

All suggestions welcome, please help, thanks in advance. Much appreciated!!! mpp

 

[Karsten75]

Definitely an electrical issue - most likely grounding. The effect is bizarre, but I suspect it interferes with the RAM or the drives and causes the crash.

Gonna be a bitch to solve. If you have a multimeter, you may have better luck. Try by 1st disconnecting from mains, then test if the USB ports short out to ground.

Then remove the PSU cabling from the computer, see if the same short still occurs.

That may at least start pointing the finger somewhere. Your work with the fron cables are also pointing at specific areas.

 

[Shaun o]

Or it could be that in the bios of your motherboard you have not set or enabled the power management and settings for the motherboard to operate correctly with the psu you have fitted to the system.

Go through the manual for the motherboard and the power management page in the manual.
ACPI should be enabled in the motherboards Bios.

You may also have options on what the power and reset buttons do on the system via power management.