Will a 400w PSU be enough for this build (Temporarily)

Mitchdoe

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Feb 7, 2016
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4,510
Hello all,
I bought an EVGA 750W gold PSU from pccase gear for my gaming pc build little under a year ago and recently it has stopped working. Whenever i press the power button, my MOBO and fan lights flash, before turning off roughly a second afterwards, not giving it enough time to enter POST. I have swapped my psu temporarily with a 400w unit that was given to me.
My question is, will this be enough wattage to power my system for a couple of months before i get the psu replaced?
SYSTEM:
MOBO: MSI Z97 GAMING 3 4GB
CPU: INTEL i5-4590
RAM: 2x 4GB hyperX fury DDR3
Monitor: BENQ 21" LED LCD
GPU: GeFORCE GTX 960

Any further suggestions as to fixing the PSU would be appreciated, but like i have said, i strongly believe it's the PSU.