Switch the switch?

Sawell

Sawell

Sawell

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7 Sep 2005
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diagnose this... Switched pc off by holding down the power button, went to press it again and nothing happens. Psu lights are on, mobo light is on (there is a light on the power button i think to show it's connected to mains and working properly, but obviously no fans when i press ze button). If the HDD or GPU were not working the fans etc would all still work when switched on (iirc?).

I'm thinking there must be a problem with my actual on switch, is this common? I've checked the fiddly psu connections and the power sw clip is on the right section, hasn't slipped off or anything.
 
take the switch connector off the mobo and just short the pins with a screwdriver/coin/tinfoil/etc...

if that solves it then the switch is indeed broken.

on the other hand, if it doesn't then your motherboard may be faulty. which is much more likely.
 
uhhhhh :( it didn't seem to work. You mean just put it over the head of the two power sw pins right?

I did the paperclip test on the psu and that works fine too (tested it on a fan)

sorry, i realise there's a similar thread open atm but i feel like our issues may differ
 
as long as anything metal touches the two pins the motherboard will start to boot if it's able.
many a thing could be faulty, but Mobo, CPU & PSU are your best candidates for failure. if it were anything else the mobo would start to boot and would then fail to POST.

when you did the paperclip trick to the PSU, was it plugged into a HDD or something? if so, did the HDD spin up?
the PSU's 12V rail could have failed but the 3.3v and 5v rails might still work, which would explain the mobo lights :)

i hope someone else pops along because i'm off to bed! good luck!
 
Uhhhh... well I've fixed the problem. I figured I'd do the opposite of so many that annoy me on forums and actually explain the resolution, which is strange to say the least.

So basically it was the PSU, regardless of passing the paper clip test (let it be known that's not a definite way to ensure it's not the PSU).

The strange thing is that I fixed the problem by replacing it with an old PSU I thought had died. The new PSU was one I bought to replace the old one :confused:

My conclusion is that PSUs are the devil and are made to **** me (and I expect many others) off.

Seriously, it's always the PSU :|
 
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