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Haswell and Chieftec BPS 750w C2 no go

post #1 of 2
Thread Starter 
I just bought i5 4570, Asus Z87-A and Chieftec BPS 750W c2, it first boot it refused to post, no beep and CPU defect led is on, I presumed bad mobo or CPU
After 5-6 power on/off from case and from wall it managed to post fine, tested stability and I put 2x 7950 at max load all just fine

After first power shut down, again no post, when it manage to post (I need to do a power off from wall and few start up) i get bios message, Overclocking failed loaded default??? (no OC mobo is at default), I tried disabling C6 and C7 same problem, also i tried removing all extra HW, leaving just ram and integrated GPU but same happened

Then i switched old PSU LC Hyperion 700w and it works gr8 I am using it for the last 24h no issue???

Also i did a quick test with Sandy bridge mobo+cpu+ram and no post issues with Chiftec BPS 750w, but i did not use any high end GPU

Is this PSU compatibility problem?
post #2 of 2
That would be my guess. There's a list on johnnyguru of the supported PSU's or somewhere I can't think of where for sure now. But Intel said there may be issue because of the power states of haswell.
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DBrisc's Budget
(14 items)
 
Ultimate Rig!
(10 items)
 
 
CPUMotherboardGraphicsRAM
intel i5 gigabyte z77x MSI GTX 460 - Twin Frozr G. SKILL - RipjawZ 
Hard DriveOptical DriveCoolingOS
Samsung Spinpoint - 1TB ASUS Corsair h100 Windows 7 
MonitorKeyboardPowerCase
Asus 21.5" LED Microsoft - Sidewinder x4 XFX - 650W fractal design 
MouseMouse Pad
Razer Naga - Molten Wal-Mart Cheapo 
CPUMotherboardGraphicsRAM
Intel i7 3930k ASUS Rampage IV EVGA GTX 780 G. Skill Trident X 
Hard DriveCoolingOSKeyboard
Samsung 840 Custom Loop Windows 8 Ducky 
PowerCase
Seasonic 860 Fractal Arc XL 
  hide details  
Reply
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