[CPU] PC Won't turn on when extra fan added

VonHamersmark

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Nov 4, 2015
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I've got an old buil

Intel 2600k
Gigabyte SNIPER m3
PSU of 500W

When I add another fan the PC won't start. The fans start and stop quickly. Do you think it could be a PSU shortage?

The extra fan is connected to a 4 pin connector.
 
It's a standar 12V fan. The processor has a cooler master liquid cooling unit and the case-standar fan.

I think 500W is enough too, but some components of the psu might be failing.

The PSU is a bit old and dusty, this might be the issue. What do you think?
 
Trouble is here is it could be the fan, the fan header, or the power supply, that's why I asked if you had another fan you could try to narrow it down, or is there another header on the motherboard you could try plugging it into?

What's the make of the Psu you have, model number would be good too if possible.
 


https://pcel.com/Acteck-R-500-126688 This is a similar model, only that mine is a previous version of this.

It works fine, but won't turn on only when I plug in the second fan. I changed the case, the fan I'm trying is the one that was in the old case, working well.
 


You need to get a decent PSU, those cheap lightweight ones dont last long, and if it is the PSU thats dying, it will kill everything connected to it, motherboard, CPU, Ram, Hard drives, GFX Card etc, it has no built in saftey features.

This is my PSU, 2 years ago a faulty capacitor blew in it whilst the computer was on, it went with an almighty flashof light and a very big bang, I brought it from OCuk, thankfully at least the PSU was still under warranty, but I was convinced with an explosion like that everything else would be dead, to my surprise, put the replacement PSU in, and the whole computer fired back to life, I later found out after speaking to overclockers, it was thanks to all the safety features built into the PSU: https://www.overclockers.co.uk/super-flower-leadex-platinum-1000w-fully-modular-80-plus-platinum-power-supply-black-ca-006-sf.html



 
That's interesting. Then i assume this is an old psu that gives less power than expected due to wear off. I doubt it has a faulty capacitor because it has been running for 3 years. How can a lower input power damage the internal components?

I do agree i need a better one but i would like to informe myself a bit more on the topic.
 


When they blow, they generally go with a very big power surge, if your PSU doesnt have protection, theres nothing to stop that surge hiting other components, I dont know if you noticed on that one of mine, but it listed this in the details: OVP/OCP/OPP/SCP/UVP

Over voltage protection / over current protection, over power protection (overload), short circuit protection, undervolt protection.

 


Those kind of issues can be solved by connecting the PSU and equipment to a voltage regulator, right( e.g. http://www.cyberpuerta.mx/index.php?cl=details&anid=28ea1d12506da052751b5f17ac54a659&gclid=CKnNq7yH0tMCFUUcaQod6LILEQ). Therefore leaving the PSU issues only as an insufficient and intermitent energy supply?
My point on the questions is to determine whether my whole built is on danger or only the PSU might just stop working someday. I would like to know if its safe to use it with a regulator while I change the PSU.