CPU not allowing me to power on?

xenomorphx

New member
I ordered a i5 4670k along with a asrock z97 fatal1ty board as a step forward from my fx 6300.

After building the (rig) the system booted up fine. Installing windows onto my new ssd was ezpz. However after I was required to reboot as I had forgotten to plug in my optical drive for the mb driver my pc would enter a power cycle, in which it would turn on and off every couple seconds. Sometimes it would work a little longer say 5 seconds but not booting into bios.

After removing/repositioning ram, re-checking cables and all that textbook stuff. I was convinced it was my motherboard. After removing the Heatsink I noticed at a certain point of releasing the socket clamp the case fans would start. Anyway after removing the CPU I saw that 2 pins were bent and sent it back for a refund and buy a new motherboard. So it was the motherboards fault right? wrong!

I purchased a Asus z97 Ranger to replace the motherboard only costing £29 more and having the money left over for it by the time I originally bought the asrock mb. So tonight I finally got around to assembling the system again having had my PSU etc being used in my AMD build. I had faith that this time everything would work out fine but it didn't. Here I was watching my PC power on momentarily then shut off. Again reseating RAM, installing speaker, reseating the CPU and such the system still did not work properly.

When I began disassembling the build again a crazy idea came into my head and I thought I should try connecting my PSU power cable without the CPU installed. (crazy because I didn't know a system could start without one) So the fan turned on along with the motherboard LED once I hit the start button. I know my powersupply can handle the wattage, I know it works fine. I also know my ram should work too. Replacing the graphics card would be useless.

Am I right to believe the CPU was "bad"? I've been waiting for about a month if not more to get this all started up with respect to different delivery times, trouble shooting and the time it took to get a refund on my asrock board.

(2x4gb Corsair Vengeance
500watt 80+ Silverstone Strider Plus)

Please if you can, take the time to read all of what I typed, it would be appreciated. I may have missed out some details but nothing I can currently think off as it's late.
 
Loosen the screws that you use to attach the mobo to the case. over tightening these can indeed prevent a boot and cycle boot up like you experience

Also try one memory stick at a time.

Try to boot without the GPU card. use the onboard video if possible (iGPU)

You have plugged the EPU plug in? that small 8pin plug that attaches to the mobo.
 
Loosen the screws that you use to attach the mobo to the case. over tightening these can indeed prevent a boot and cycle boot up like you experience

Also try one memory stick at a time.

Try to boot without the GPU card. use the onboard video if possible (iGPU)

You have plugged the EPU plug in? that small 8pin plug that attaches to the mobo.

Tried all of the suggestions you made a while ago, nothing worked.
 
try taking the hdd out, what OS did you install? windows 8/.1 has a nasty "feature" that hides the post inc options to get into bios etc. best way to rule os out would be to unplug hdd and try booting from live cd, something like hirens or ubuntu would do.

you said fans turned on when you were removing cpu? you didn't unplug power and drain remains of it from motherboard? that's bad dude.

not sure about your mobo specifically but most of them have error code dispays and led dotted around mobo, when you turn it on do you see any errors or leds being on (apart from mobo power led), manual should specify what each led means if they are on.

powering pc on without cpu is not crazy, all you're doing it giving motherboard power which then powers other stuff plugged into it, but without something to control everything you won't get far.

one thing also worth a try although unlikely, reset cmos, never hurts to try that (apart from loosing your oc setting and having to spend hours redoing it, the pain.)
 
try taking the hdd out, what OS did you install? windows 8/.1 has a nasty "feature" that hides the post inc options to get into bios etc. best way to rule os out would be to unplug hdd and try booting from live cd, something like hirens or ubuntu would do.

you said fans turned on when you were removing cpu? you didn't unplug power and drain remains of it from motherboard? that's bad dude.

not sure about your mobo specifically but most of them have error code dispays and led dotted around mobo, when you turn it on do you see any errors or leds being on (apart from mobo power led), manual should specify what each led means if they are on.

powering pc on without cpu is not crazy, all you're doing it giving motherboard power which then powers other stuff plugged into it, but without something to control everything you won't get far.

one thing also worth a try although unlikely, reset cmos, never hurts to try that (apart from loosing your oc setting and having to spend hours redoing it, the pain.)

The OS was windows 7 premium. That was with the first motherboard however. I reformatted the ssd for the new motherboard, but I couldn't even get into the bios.

Yeah it was an accident, so many times I tried changing stuff I forgot to remove the power cord once. I installed a speaker but no beeps, the system wouldn't even power on long enough for it to do anything.

Resetting the cmos did nothing either.

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I will be buying a new cpu to see if it works in a couple of weeks, but I'd like to try and clear everything up.

I stupidly delided the cpu before I could test it, though no physical damage occurred during the deliding nor did I drop it, sending it to Intel is out of my options. Reason for not testing it is I thought a DOA CPU would be 1 in a million. If it turns out it is the cpu with my track record on everything in life, I'll have been the luckiest man alive
 
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Power supply could have gone bad. Didn't see anyone mention that but if all of a sudden it won't boot even with a new board then it's probably the power supply.
 
If you have Asus board, and you have access to another PC, try re-flashing the latest BIOS (USB Flashback, check mobo manual for instructions) It won't need anything on board except power.

If this doesn't work, it sounds like the CPU been fried from the bent pins!
 
@NeverBackDown The power supply is being used in my amd rig right now:)

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@YouWhat you think a fried cpu would exhibit the problems I'm having?
 
@NeverBackDown The power supply is being used in my amd rig right now:)

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@YouWhat you think a fried cpu would exhibit the problems I'm having?

Yep, dead CPU would act exactly like the symptoms you are having unfortunately.

Get it RMA'd (hopefully same place that your old motherboard was from) and then that way you can point to that as cause for it....
 
Yep, dead CPU would act exactly like the symptoms you are having unfortunately.

Get it RMA'd (hopefully same place that your old motherboard was from) and then that way you can point to that as cause for it....

Thanks for the input, unfortunately I delided the cpu before testing though no physical damage occurred I'll be ordering a 4690k.
 
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you can try RMA directly with vendor instead of manufacturer, chances are they aren't clever enough to notice you delid it and will just accept rma
 
you can try RMA directly with vendor instead of manufacturer, chances are they aren't clever enough to notice you delid it and will just accept rma

That's a bit dishonest and not something we condone here. But since he has ordered a new CPU then it doesnt matter.

Be careful if you delid your Devils Canyon CPU, you will need to protect the components near the die with something like nail varnish or silicone. Even then, there is no point delidding the new CPUs unless you will OC it to the max and use liquidmetal to transfer the heat.
 
you can try RMA directly with vendor instead of manufacturer, chances are they aren't clever enough to notice you delid it and will just accept rma

Nah, they're smarter than you think. Especially if its people like Overclockers...
 
That's a bit dishonest and not something we condone here. But since he has ordered a new CPU then it doesnt matter.

Be careful if you delid your Devils Canyon CPU, you will need to protect the components near the die with something like nail varnish or silicone. Even then, there is no point delidding the new CPUs unless you will OC it to the max and use liquidmetal to transfer the heat.

Yeah I used nail varnish and liquid pro on the 4670k. But since the Devils Canyon has new TIM I probably won't go through the bother. Maybe in the future though.

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Nah, they're smarter than you think. Especially if its people like Overclockers...

Amazon use something called Collect+ when refunding, once the guy at the local shop or what have you scans the packaging label, Amazon issue the refund from that point on. Weird really, especially with shipping taking an extra day (from northern ireland) I could have my refund before they had time to check it.
 
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Sorry if this is considered a necro bump, thought I'd give some disclosure.

My 4690k came in the mail today, got everything set up. It seems like the power cycling issue has stopped. Hopefully it's the end of it, thanks for all the input.
 
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