CPU and PSU fan spinning for split second

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Guest

Guest
Hi, i have just assembled a new build, and all i can get it to do is get the CPU and PSU fan for a split second. I have the Motherboard, CPU, CPU cooler, and RAM installed in the case with no drives and no expansion cards. What is causing this and how can i fix it? I have checked that there are no objects between the board and case.
 
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Guest

Guest
Yes the standoffs are in place. CPU is a Core i3-4150. Mobo is a Gigabyte H81M-DS2. PSU is a SHAW from msy (good budget PSU, know alot of people who have them)

I think i may have figured it out, as the guy at the IT shop said it would need a BIOS update. I was planning to do that after, so could that be causing the issue?
 
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Guest

Guest
I belive that the updated haswell CPU's from "Early 2014" need an update, but all of the "Mid 2013" CPU's will work out of the box. How would I update it, if I have no CPU that works correctly on that version? The PC shop did offer to do it for me though. I may go back later.