Question whats wrong here - cpu not detected msi z790

[evothology]

specs:
cpu: i7-13700kf
mobo: msi mag z790 tomahawk wifi ddr4
ram: corsair vengeance rgb rs 32gb (2x16) ddr4 3200 cl16
gpu: nvidia rtx 3060
storage: samsung 970 evo plus 2tb
wd blue 1tb hdd
psu: corsair rm1000e

it has been a few days since i built this pc. today i turned it on but it wouldnt post. fans and argb was running but no post. there was a light indicator on my motherboard which told me that my cpu wasn't being detected. please help me since i spent all my lunch money on this pc

attempted solutions
- new ram kits
- other psu
- updating bios
- resetting cmos
- seeing if cpu pins are bent or not (they are not bent)
- reseating psu cables
- taking out gpu

 

[Lutfij]

Welcome to the forums, newcomer!

You could try with one stick of ram on all slots of the motherboard. You will need to drop your processor onto another known working motherboard with the right BIOS version to see if the processor with a discrete GPU POST's and you're able to boot to GUI.

 

[evothology]

Welcome to the forums, newcomer!

You could try with one stick of ram on all slots of the motherboard. You will need to drop your processor onto another known working motherboard with the right BIOS version to see if the processor with a discrete GPU POST's and you're able to boot to GUI.

hello i just tried to put one stick of ram on all slots of the mobo however it still showed a red cpu light. i asked my brother if i could test my cpu on his mobo (he has a z690) however he is refusing and saying that my cpu will brick his mobo. is he right or wrong? how can i convince him to allow me to test my cpu on his mobo.

 

[evothology]

update:

i tested the mobo with a different cpu and it posted. it seems like the cpu was actually the problem here. How did the cpu break? it was only purchased a few days ago and it had proper cooling.

 

[Misgar]

I too, would be reluctant to test a suspect CPU in my computer, especially if I had an expensive motherboard and it was my only/main rig.

In theory, the BIOS should detect an over current condition and shut down the computer immediately, which seems to have happened on your motherboard, when it detected a fault in the CPU.

However, you cannot absolutely guarantee that a duff CPU won't take out an expensive motherboard. Hence your brother's reluctance.

Modern CPUs pull over 100Amps (albeit at pretty low voltages) but a CPU running at 100W dissipates the same amount of heat as an old fashioned 100W Tungsten light bulb. High currents and high powers have the potential to destroy CPUs and motherboards.

In your case the motherboard seems to have survived. Count your blessings. Many people have unplugged their CPU only to discover bent pins inside the CPU socket. Bent pins can be difficult or impossible to repair in a socket. Let's hope your motherboard is intact.

As for why your CPU went bang, did you assemble the computer on an anti static mat, or wear an ESD wrist strap connected to the computer case? Probably not.

Static Discharge damage is insidious and can take months or years to appear.

https://www.makeuseof.com/what-is-esd-meaning-and-how-it-can-damage-electronic-hardware/

Most people get away with it. The only precaution they take is to touch a bare metal part of the chassis (to discharge any static charge on their body) before touching RAM, CPU, GPU, or making connections to the motherboard.

Your CPU probably died for a completely different reason.

Did you overclock the CPU.
Did you overclock the RAM.
Was the CPU correctly seated in the CPU socket.
Are any CPU socket pins bent.
Are you sure the CPU cooler was installed properly.
Did you remove the clear protective label found on the base of some coolers.
If there was no pre-applied TIM on the cooler, did you apply the correct amount. Too much thermal paste is almost as bad as too little.

Now that you've got the system running again, don't overclock the CPU for the first few days.

Run MemTest86+ from a bootable USB memory stick to see if your RAM or mobo have been affected by the dead CPU.

https://memtest.org/

 

[evothology]

I too, would be reluctant to test a suspect CPU in my computer, especially if I had an expensive motherboard and it was my only/main rig.

In theory, the BIOS should detect an over current condition and shut down the computer immediately, which seems to have happened on your motherboard, when it detected a fault in the CPU.

However, you cannot absolutely guarantee that a duff CPU won't take out an expensive motherboard. Hence your brother's reluctance.

Modern CPUs pull over 100Amps (albeit at pretty low voltages) but a CPU running at 100W dissipates the same amount of heat as an old fashioned 100W Tungsten light bulb. High currents and high powers have the potential to destroy CPUs and motherboards.

In your case the motherboard seems to have survived. Count your blessings. Many people have unplugged their CPU only to discover bent pins inside the CPU socket. Bent pins can be difficult or impossible to repair in a socket. Let's hope your motherboard is intact.

As for why your CPU went bang, did you assemble the computer on an anti static mat, or wear an ESD wrist strap connected to the computer case? Probably not.

Static Discharge damage is insidious and can take months or years to appear.

https://www.makeuseof.com/what-is-esd-meaning-and-how-it-can-damage-electronic-hardware/

Most people get away with it. The only precaution they take is to touch a bare metal part of the chassis (to discharge any static charge on their body) before touching RAM, CPU, GPU, or making connections to the motherboard.

Your CPU probably died for a completely different reason.

Did you overclock the CPU.
Did you overclock the RAM.
Was the CPU correctly seated in the CPU socket.
Are any CPU socket pins bent.
Are you sure the CPU cooler was installed properly.
Did you remove the clear protective label found on the base of some coolers.
If there was no pre-applied TIM on the cooler, did you apply the correct amount. Too much thermal paste is almost as bad as too little.

Now that you've got the system running again, don't overclock the CPU for the first few days.

Run MemTest86+ from a bootable USB memory stick to see if your RAM or mobo have been affected by the dead CPU.

https://memtest.org/

hello there
i assembled my computer with an ESD wrist strap connected to the case.
No the CPU was not overclocked.
No the RAM was not overclocked.
Yes the CPU was correctly seated in the CPU socket.
No pins on the CPU socket are bent.
Yes the CPU cooler was installed properly.
Yes the clear protective label was taken off before installing
I didn't apply too much or too little thermal paste.

I'm still confused on how the cpu broke, it was working perfectly fine for a few days.
I've emailed intel customer support a few hours ago and they're just asking me questions about the situation

 

[Misgar]

Excellent. You've done all the right things. Now the mystery deepens.

When you unboxed the CPU did you notice if the seals were still intact? Some suppliers have a nasty habit of "testing" customers' returns and when they find "nothing" wrong, put the item back on the shelf and pretend it was brand new.

 

[evothology]

Excellent. You've done all the right things. Now the mystery deepens.

When you unboxed the CPU did you notice if the seals were still intact? Some suppliers have a nasty habit of "testing" customers' returns and when they find "nothing" wrong, put the item back on the shelf and pretend it was brand new.

Hello

The CPU was not unboxed, it still had the factory seal intact.

 

[Misgar]

Bang goes another theory. Sorry, I'm running out of ideas. If the new CPU carries on working, I'd be inclined to put it down to early "bath tub" failure or plain old bad luck.