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PC wont post and GPU fans not spinning


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#1 cleamon

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Posted 31 December 2015 - 10:22 AM

Upgraded MOBO, CPU and RAM. Did a clean install of Windows 10 and kept getting the dreaded Windows logo and spinning dots on restart so I decided to pull the cmos which worked fine the first reboot. Went to reboot again and now it wont post and the GPU fans wont spin. Plugged in a different GPU and the fans spin fast then slow and still no POST. Bad PSU? Bad Mobo?
 

 



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#2 Drillingmachine

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Posted 31 December 2015 - 10:32 AM

MOBO, PSU, CPU, RAM etc exact models?



#3 cleamon

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Posted 31 December 2015 - 10:36 AM

AMD FX-8320 

MSI 970 Gaming ATX AM3+ 970 DDR3 2PCI-E16 2PCI-E1 CrossFireX SATA3 USB3.0 Motherboard 

G.SKILL RipjawsX F3-1866C9D-16GXM 16GB 2X8GB DDR3-1866 CL9 240PIN 1.5V Dual Channel Memory Kit 

Gigabyte R9 270 OC 975MHZ 2GB 5.6GHZ GDDR5 2XDVI HDMI DisplayPort PCI-E Video Card

Antec Basiq BP550 Plus 550W 24PIN ATX 12V V2.2 80PLUS Modular Active PFC Power Supply



#4 Drillingmachine

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Posted 01 January 2016 - 03:37 PM

Given fact that PSU is triple rail design, it's possible that +12V rail limitation might cause problems.

 

Try with 1 memory stick only. Also try to underclock (not overclock but underclock) and undervolt CPU if possible. If that works, then problem is likely PSU.






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