Envybamse Posted August 21, 2013 Share Posted August 21, 2013 Here goes. My PC starting having trouble powering up, when pressing the power button, nothing would happen. So i tried clearing cmos and that helped. The problem persisted and started occurring more often. I figured out it was my AX850. The solutions to my problem are: Clearing CMOS, taking out the mobo battery, turning off the power to the pc at the switch. So now I'm curious as to why this works. I'd think these 3 actions clear the motherboard of the power/voltage in it so its reset, but why does that make the PSU power on again? I have already RMA'd the PSU, but I'm still curious about it, so if anyone can enlighten me, I'd be thrilled. Link to comment Share on other sites More sharing options...
The Joshua Tree Posted August 21, 2013 Share Posted August 21, 2013 My AX850 did a similar thing, when pressing the power button on the pc nothing would happen instantly. You would have to wait anywhere from 20 seconds to over a minute before you could turn the pc on, the power LED on the motherboard wasn't coming on straight away so no power was getting to the motherboard, like i said this could vary as to how long ot would take to get power. Finally a flash and a loud crackle came from the PSU so at that point i turned everything off straight away and RMA'd the PSU to Corsair, Corsair were great thet sent me a brand new replacement within 7 days of posting the PSU to Holland, they sent me the AX860 as a replacement. The RMA service once the faulty PSU was on its way was excellent. Link to comment Share on other sites More sharing options...
peanutz94 Posted August 21, 2013 Share Posted August 21, 2013 learing CMOS, taking out the mobo battery, turning off the power to the pc at the switch. So now I'm curious as to why this works. I'd think these 3 actions clear the motherboard of the power/voltage in it so its reset, but why does that make the PSU power on again? It shouldn't. And I really believe your issue is totally different than the previous user's. In your case i would tend to think this is more of a MB issue. But see if a new PSU doesn't fix it. If not, then you know you need to get your board replaced. Link to comment Share on other sites More sharing options...
ram1220 Posted August 21, 2013 Share Posted August 21, 2013 A motherboard issue is the first thing I thought of too. Link to comment Share on other sites More sharing options...
Envybamse Posted August 22, 2013 Author Share Posted August 22, 2013 I thought I mentioned it, I figured out it was the psu by trying a new one. I swapped between them repeatedly and it never worked with the AX without clearing the mobo. Link to comment Share on other sites More sharing options...
koenmiltenburg Posted August 22, 2013 Share Posted August 22, 2013 I had a similar problem, when I shut down my pc it wouldn't turn back on again, unless I flicked the on / off switch of the PSU to off and then back on again. Somehow the problem fixed after a couple of boots.. Question, does your PSU also make a loud 'click' noise when it shuts off? I'm using the corsair hx750 by the way. Link to comment Share on other sites More sharing options...
Envybamse Posted August 22, 2013 Author Share Posted August 22, 2013 No noises or anything. Other than the boot problem, the psu is 100% functioning and normal. Link to comment Share on other sites More sharing options...
Inque Posted August 22, 2013 Share Posted August 22, 2013 I've had this problem with my AX750 (I've gotten RMA approval and waiting for replacement) The paper clip test showed that it would power on, so I thought it might have been the Motherboard. But when I switched on PSU the second time during the paper clip test, it wouldn't power on (case fan wouldn't light up/spin). I had to wait about 5mins for the PSU to "cool down" before switching on and getting power again. I tried this test about 3 times with the same result, switching on power for about 10-20 secs, then having to wait for a "cool down" period. I also tried another PSU and had no problems. Link to comment Share on other sites More sharing options...
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