Is my motherboard or CPU bad?

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Prisoner154

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My computer keeps on turning on and off repeatably as seen here (https://drive.google.com/file/d/0B4WCh-mP_Wiwa0dEZ0Z4bmVIZU0/edit?usp=sharing)

I've taken everything out besides of the PSU, CPU, and the 2 sticks of RAM and it would still do this. I've also swapped the RAM around and did it with one stick, same results. I've test my PSU with the paperclip method, and that seemed to function fine, because it didn't turn on and off. Lastly i took out all the ram and it would still do this, so now i am pretty sure its either the CPU,Motherboard, or the PSU. If you are wondering what i did to cause this problem its because i was stupid and dicked around in the UEFI ( i turned on PLL over-voltage, changed the RAM speed to 1066 MHz, changed the cpu ratio to all cores then punched in 38) other than these settings i changed nothing else, not even the voltages, i left those on auto, so highly doubt that i fried the CPU. Additionally some say to just reset the CMOS (take out the battery or reset the jumpers on the board) i did that, and i got the same results, nothing changed, i even left the battery out of the board for a whole night, still nothing. So yeah what is the likely hood that my cpu or motherboard is fried? cause if my CPU is fried i may never get to use that computer again, if its the motherboard i might get that replaced.
 
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Sounds like you got your cpu Toasted, one way left now go and check it with friends pc, I knew he would not feel comfortable but tell him just to check your processor.
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xtreme5

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Okay, First of all you need to check your motherboard.

Motherboard Dead Or Alive?
Take out all ram sticks turn your pc on if you hear "beeps" like sound then surely your motherboard is fine but if you didn't hear any sound coming from it then it is died.

Cpu Dead Or Alive?
Take it out check it with your friends pc after that you'll find out what is bad.
 
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xtreme5

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And please do mention your system specifications?
Go to bios settings and apply factory default. Tighten every plug look around it every wire is plugged correctly in correct place?
Disconnect Harddisk then reconnect it, make sure power cable is working fine.
 
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Prisoner154

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As for the system specs it is an intel I5-3570k, Corsair CX750M PSU, ASUS GTX 660 Direct CU2, Motherboard is an As-rock H61M-HVS, 8 Gb of G-Skill 1066 Ram (2x4gb sticks), 1TB western digital HD, and i have one DVD optical drive.

As for getting into the BIOS setting, i cant because there is no display, and the computer shuts down before i can even get in, and it would just keep going on off on off on off till i turn off the main switch from the PSU or pull the plug, or hold the power button down on the case. Also i have bread boarded my mobo and worked outside of the case, and unplugged any component that would help me isolate the problem, so far its down to my CPU/mobo/Psu/Ram that are plugged in but as i said above i have removed both ram sticks and swapped one of them around....same results, so im pretty sure its not the ram.
 
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Prisoner154

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Unfortunately i do not have a case speaker, so i don't know if it beeps or not, and as for the friend idea, i did ask him and he basically has the exact same computer as me (CPU is exact same) but he doesn't feel comfortable taking his computer apart so i have to respect his decision

 
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Prisoner154

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Well, i have not taken my computer apart before changing the settings in the bios and it worked fine before hand and its highest temp on full load was around 45 degrees Celsius, lowest was 31 , and i have checked it 2 times after the problem occurred, but nothing (but the thermal paste did look a bit worn and old) but i dont have any extra, also i do have a water cooler so i don't think its a heat problem, i dont have another heat sink so i cant test if that is the problem or not
 
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Prisoner154

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oh yeah i forgot to tell you about that, yeah i took out the GPU and it did the same thing, i also put the VGA cable to see if the onboard Graphics would work.....and nope on off on off on off over and over ._.
 
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Prisoner154

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how do you know its the CPU's fault though? and i was being stupid :/ tried "overclocking", but i didn't play with the voltage settings though, and i didn't see any physical damage to anything.
 
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Prisoner154

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i've never done that before, but i'll do that tomorrow , how will you know that will work though?
 
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Prisoner154

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i just hope its not the cpu though cause i don't have that type of money to replace it :( ill try it out tomorrow and re-post back, as for now thanks i just hope nothing expensive got fried up. Whats the likely hood that my cpu is fried or something?
 
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Prisoner154

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yeah, but i took out the battery before for a whole night and nothing has changed. How is taking the cpu out going to make any difference?
 
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xtreme5

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Nothing is fried dear, if something was fried then your pc would not even boot I'm sure every component is working fine but problem is something with cmos bios settings, everything will be fine don't worry. Removing of processor is not that hard as you thought slowly and steady thats it.
 
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Prisoner154

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alright, ill try it tomorrow and ill re post back, as for now thank you. i hope my dad wont murder me .-. oh and what exactly is pll overvoltage?
 
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xtreme5

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It sometime makes many differences in some cases processors not seated correctly, in some cases processors pins are bent/broken while in some cases there are some tiny dust between motherboards socket and processor. These are the common symptoms of causing computer restart.
 
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Prisoner154

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i've never opened it before this problem occurred though, only to dust the radiator thats it
 
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xtreme5

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PLL stands for phase locking loop,
This is the voltage used by the clock multiplier
circuit inside the CPU.
it is the
primary circuit in the processor that sets the overall
clock and not necessarily the processor plls are
used anywhere that a device is clocked against a
reference where the resulting clock is higher than
the reference clock.
 
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Prisoner154

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From what i read it seems safe and all, but does it do any harm? cause ive read that some people with gigabyte boards have had problems with boot loops to, not that i have a gigabyte board. i've also heard that you should keep it disabled.
 
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