PC takes a long time to turn on

Patchmeup

Honorable
Jan 30, 2014
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I've had this PC for about 3yrs. It's always worked well (in relation to turning it on) and out of nowhere, for about 2-3 months, I have to hold down the power button for several minutes before it even turns on. At first, it takes about 5-10 secs. Over time, it takes up to 5-6mins of continuously OR repeatedly pressing before it lights up.

Setup:
LG 21" LCD monitor
Sapphire HD6850 graphics card
AcBel 600w PSU
AsRock H61M/U3S3 motherboard
CoolerMaster Elite 343 case
Beltron AVR

What I've done:
1) Replaced power cord
2) Turned off/on the power switch directly on the PSU
3) Turned off/on the AVR
4) Vaccuum'd the whole CPU/case
5) Re-flashed the BIOS
6) Upgraded the BIOS
7) Turned off wake up LAN and other special features on the BIOS (whether power related or whatnot)

I've done the above troubleshooting in that order and the last 2 steps ALMOST worked because I was able to power up the computer normally for 2 days. Unfortunately, it went back to the same problem up until now.

What else do you suggest I do or try (with replacing the PSU an absolute last)?
 
Solution
try changing the cmos battery first if it gone weak the mb wont turn on. also if a friend has a volt meter read the power good line on the 24 pin atx cable. if it low a mb wont post.
Have you tried hooking up the power button from a different case to your mobo to see if the defect isnt to be blamed on your case's power button? I dont know for sure if that it but if you have another case somewhere it would be worth trying. Lets just hope its not the mobo.
 


Alright, I'll probably have to try this although I've been avoiding this haha. I have this thinking that as long as the date and time are still right on the PC it means the CMOS batt is still okay.

What should the reading on the voltmeter come up to say the ATX cable is fine? And if it is bad, is there a way to just replace the cable ONLY or do I have to replace the PSU entirely? 🙁
 


Hm, I don't have a different case but this is something that slipped my head. I'll see if I can try this out. If in case it IS the power button, is that something that's easily replaceable or fixable?
 
Eww hard to say. Im not an expert when it comes to case power buttons 😛. But for as far as ive seen so far they dont include a easy way to take out he power buttons of a case. Might be possible, but I dont think it will be too easy... Test it first, if its that that, google for a bit too see if it has been done before. Might have to get a replacement for your case than though.

Btw, just take your pc to a friends place and hook his power connector to your mobo to test :)
 


I will :) thanks for the add'l info :)
 


Well, after 3 days of long-time booting, it seems it is the battery after all :)

Thanks for all your help guys :)
 
I know this was supposedly closed but for accuracy purposes, it's not the battery 🙁

After those 3 days of long-booting, the computer starting failing again. I stuck with the problem for a bit until 2 days ago, it didn't turn on completely. The problem was 2 things:
1) The power supply... it was already giving out low voltage.
2) The power switch... although I've tried swapping it with the reset one, it didn't work because the PSU had already failed by then. With the new psu, the PC immediately turns on when turning the AVR on as well but after swapping the reset switch with it, it worked fine.

There :) Just in case someone has a similar problem :)