Asrock Ab350 K4 Fatality UEFI

My vote is it's the power supply.  When I've ever had weird stuff happening it was the PSU.  Considering his is from 2011, I've very surprised that it's lasted THIS long.  My PSUs only last 3-4 years tops.

Hello this are my temps even if set default the motherboard cpu temp will be around 45 etc

I also have a K4 gaming and my cursor is extremely slow in the bios as well but if you use the tab and arrow keys to navigate around I think ull notice its not laggy at all.

well i just went and checked two spare power supplies
one has a empty blank connector same as yours
the other one has a white coloured cable there
(i think its safe to assume its un-needed/spare)
so where are we now ?
you have disconnected about everything you can to rule out problems
which leaves us with very few suspects
in no order of how likely
iut can only leave the problem as either
mainboard/cpu/ram brand

did i miss anything out guys ?

Well guys today has been a long, long day, I ended up by testing a lot of things

First Off, I disconnected my pc from a power cord, and connect directly to the wall's outlets then, I open my case, take apart the cover and then, I start to disconnect things like: HDD, DVD/CD reader and by testing separated things, but the symptoms did continued, after I decide to

Disconnect from my PSU those cables that are for SATA and case fans, also i disconnected the SSD cable too

And I let just connected the GPU cable to supply my GTX 580. Then I test my GTX on both PCIE EXPRESS PORT of my Asrock ab350, and the symptoms continued, the same mouse lag cursor etc etc.

Also I disconnected USB cables in the motherboard (the only that brings with my v9 case for front panel USB which are 2 usb port), also I disconnected the HD audio cable. So at the end I ended up with only the POWER/RESET/HD LED cables, and the rest was 8 pin processor cable connected, the cpu fan cooler connected, the 24 pins of course, and nothing more else, and I boot to bios, and yeah my rear panel all usb were funtionally, and i tested each usb with my both mouse and keyboard, and sadly the problem persist u.u

So i guess is not the power supply, neither the SSD, or HDD, or DVD/reader because they were unplugged, and the power supply just was supplying the gpu and the others cables mentioned early


And then I was checking the motherboard closely everything there. I ensure to have everything seat/connected well, also i reset THE CMOS, i did too take off and put back the Lithium battery, I swap my memories, tested with one module memory, with the 2 two memory itself, then I disconnected and connect the 24 pins connectors etc,etc. The only thing that I didn't wanted to do was: to RESET the Cpu chipset... because i don't have thermal paste to put it back, so I decide to not to reset my cpu... when I say reset, is to take off the cpu chipset wait for couple seconds and put it back, then cleaning with alcohol and blah blah, but i didn't that part.. because as I say I don't have thermal paste... so i don't want to mess temperatures..


Also I did check for every cable there, but so far everything was good plug, and in good conditions


The only thing that calls my attention was the 24 pin psu connector
Look:
But i really don't think this is a problem because if you check the pictures, it seems like there never was a cable in that dead pin etc, like it was manufactured in that way, this is a Thermal Take ToughPower XT 775 bronce80+