PC doesnt turn on, GPU light blinks once

[zetrixcz]

Hello everyone, I am having this really weird issue, yesterday I turned off pc ( had some windows update so I just normally pressed "Update and Turn off" and went sleep). Next day when I tried to turn on the pc I couldn't. I checked the power cable in the back, plugged it out and in from both socket and PC and turned PSU on and off, nothing. So I unplug all cables, open up the PC and then plug just power cable in. I turned PSU on and the little light on my GPU ( I dont have any lights on mobo) flashed quickly just once and pc didnt turn on.
I checked the front panel cables which all seem ok. Next thing I tried is putting out everything except CPU and RAMs and voala it turns on, obviously turns off right after since my HDD is unplugged too. So I decide to plug in the HDD in different SATA port and it works.
From now I am trying to plug each component one by one and try to turn the pc on after it. As Soon as I plugged my USB cables from front panel in the mobo it stopped working. When I unplugged them and tried again it didnt turn on again.
Since the pc turned on few times the PSU can't be faulty. Something must be wrong with my motherboard and I am not sure what. I am out of ideas, does someone know what should I do?

This is my second PC that only my parents use and has some really old components so anything could be faulty.
Here is my build:
Motherboard : ASRock B75M
PSU: Fortron ATX-400PNF 400W
GPU: GTX 650 Ti
HDD: (reeeeally old, buying new SSD) : Seagate Barracuda 7200.10 - 320 Gb
CPU: i5-3570S

 

[cin19]

From now I am trying to plug each component one by one and try to turn the pc on after it. As Soon as I plugged my USB cables from front panel in the mobo it stopped working. When I unplugged them and tried again it didnt turn on again.

Clear the CMOS by removing the CMOS battery, also remove the USB cables too, then reboot the PC, what happens? the PC can boot or not.

By the way, do those cables connect to somrthing else? or just the cables? I think the problem maybe from the electric short circuit, try use the USB ports in the back I/O panel.

 

[zetrixcz]

From now I am trying to plug each component one by one and try to turn the pc on after it. As Soon as I plugged my USB cables from front panel in the mobo it stopped working. When I unplugged them and tried again it didnt turn on again.

Clear the CMOS by removing the CMOS battery, also remove the USB cables too, then reboot the PC, what happens? the PC can boot or not.

By the way, do those cables connect to somrthing else? or just the cables? I think the problem maybe from the electric short circuit, try use the USB ports in the back I/O panel.

Ok I removed the battery for like half minute and put it back in, I still have only RAM and CPU inside. I plugged back power cable and tried to turn it on and IT DID! I am gonna put back all the other components one by one and see if I get it working. Not sure what you mean by the second question though. In my front panel I got few SD Card slots with 2 Classic USB ports, this is all connected to 8 pin cable that I plugged into the motherboard's USB, after that it stopped working.

 

[zetrixcz]

Ok, plugged in HDD and it worked, plugged in CD-ROM and Audio from front panel and worked, then I plugged the USB from front panel and GPU and it doesnt work. The GPU light against just flashes and it doesnt boot up, Im gonna repeat the CSMA proccess and try booting up without the USB from front pannel plugged in but everything else there.

 

[cin19]

So you try to clear the CMOS again, but don't connect the USB cables in the front panel that are for the SD card. Then go into the BIOS, change the boot order, * check the manual to see how and where to change the boot order.* You need to unselect boot from the USB device ( means the SD cards or you had the SD card inside the card reader something like that), only set to 1st boot =CD/DVD, 2nd = the HDD or SSD with the OS in it, then save and exit, you should be able to boot again, even you connec the SD cards or the card reader.

 

[zetrixcz]

So you try to clear the CMOS again, but don't connect the USB cables in the front panel that are for the SD card. Then go into the BIOS, change the boot order, * check the manual to see how and where to change the boot order.* You need to unselect boot from the USB device ( means the SD cards or you had the SD card inside the card reader something like that), only set to 1st boot =CD/DVD, 2nd = the HDD or SSD with the OS in it, then save and exit, you should be able to boot again, even you connec the SD cards or the card reader.

The boot order isnt problem, I probably wrote it like idiot. There is nothing in my CD rom nor USB ports, I was just connecting them to my mobo. My windows is on the HDD and thats only place where it is. I reseted the CSMA 2 more times, I plugged in everything except the front panel USB( which I dont really need) and it works. I booted up into windows and everything seems to work fine. I am currently creating backup of the system in case things go even more wrong. I am afraid what will happen if I turn the pc off, last time I did that I had to take out the battery and put it back in. I dont really want to reset the CSMA every time I need to turn on pc, its definitely not healthy for the PC.

 

[zetrixcz]

Thanks for the help though cin19, the CSMA reset seems like only solution at this moment. I will let you know what will happen after I turn it off and try to turn it on back again.

 

[cin19]

If you means CSM instead the CSMA, but I maybe wrong.

If you had the win10 64 bit, you can just let the CSM off.

 

[zetrixcz]

Everything works now