PC fails to boot properly after multiple attempts (random success)

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Joined
11 Apr 2012
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412
Location
London
Bought and built my custom PC back in April this year (spec in signature)

Over time I feel that its life is deteriorating as it gradually fails to boot up more and more as the months go by.

I can tell that it fails to boot up by the difference in fan noise upon turning it on. When it fails, the fan noise is at full blast instantly - There will be no output on my monitors. Conversely, When it boots up properly, the fan starts off quitely and then will steadily build up in RPM as it gets past the post screen and starts Windows. Fairly subtle but I've had numerous instances of this so I have been able to tell.

It is literally like roulette in terms of successful boot up - which as you can imagine is infuriating.

Anyone have an idea what it could be? Motherboard? RAM? PSU? CPU? The funny thing is I can leave it on for days without any hardware failure which leaves me totally and utterly perplexed about this annoying problem.

Thanks in advance.
 
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Could try reseating all your connecters. Maybe even change the data cable on your OS drive, could be faulty. Also run memtest to rule out faulty ram. It`s just a process of elimination, i`m afraid.
 
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