Filipo660 Posted July 15, 2014 Share Posted July 15, 2014 Hello everyone, I am having trouble with my computer. It only boots up when I reset the CMOS (sometimes even multiple times) or when I move my power cable slightly and then plug it back in. Sometimes, the computer boots up right after I press the power button. My PSU is Corsair AX850, my motherboard is Asus Maximus V Formula. I have tried multiple things: - replacing the CMOS battery and power cable - booting with one RAM stick - booting without the GPU being connected - booting without the HDD/DVD drive/any other devices including the keyboard and mouse - updating the BIOS - putting away the wireless card on the motherboard (shorting issue) I have also tried the paper clip test of the PSU without it being under any load and the PSU fan started spinning for about a second, so I guess it passed? I am not sure if the problem could be the motherboard or the PSU. I am about to RMA one of them or maybe both? :confused: I would be very grateful for any of your suggestions, thank you. Link to comment Share on other sites More sharing options...
jameyscott Posted July 16, 2014 Share Posted July 16, 2014 Is there any chance you have another PSU to test with? It does sound like a PSU issue, but just to make sure it would be easier if you had another one to test with. YOu might also want to start a ticket at corsair.force.com Link to comment Share on other sites More sharing options...
bibib Posted July 16, 2014 Share Posted July 16, 2014 You've basically described the problems I've had and it turns out it was my PSU. (Only after buying a new motherboard did I realise that...) Link to comment Share on other sites More sharing options...
Filipo660 Posted July 16, 2014 Author Share Posted July 16, 2014 Sadly, I don't have any other desktops to test the PSU with/other PSU's to test in my system and it would be hard to get my hands on any. I have started a ticket three days ago, but still without any reply. :sigh!: Link to comment Share on other sites More sharing options...
Corsair Employee jonnyguru Posted July 16, 2014 Corsair Employee Share Posted July 16, 2014 You've basically described the problems I've had and it turns out it was my PSU. (Only after buying a new motherboard did I realise that...) But, in his case, it could still be the motherboard. Link to comment Share on other sites More sharing options...
Filipo660 Posted July 17, 2014 Author Share Posted July 17, 2014 I would like to add that the PSU fan didn't start spinning immediately as I turned the unit on. It started spinning for about a second or two when I turned it off. I guess it is the fact that the fan starts spinning when the PSU is under a certain amount of load/reaches certain temperature? Link to comment Share on other sites More sharing options...
Corsair Employee jonnyguru Posted July 17, 2014 Corsair Employee Share Posted July 17, 2014 I would like to add that the PSU fan didn't start spinning immediately as I turned the unit on. It started spinning for about a second or two when I turned it off. I guess it is the fact that the fan starts spinning when the PSU is under a certain amount of load/reaches certain temperature? Because the fan has a fanless mode, it doesn't spin unless temperatures are rather high. It only spins initially to calibrate the fan controller. Link to comment Share on other sites More sharing options...
Filipo660 Posted July 17, 2014 Author Share Posted July 17, 2014 So we can only assume it's a mobo problem? Link to comment Share on other sites More sharing options...
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