Processor or motherboard burnt?

Salut, déjà si c'était la carte mère qui avait grillé, tu ne pourrais rien démarrer ! Donc, à coup sûr, c'est le pro !

You haven't looked at his post; he provides information about his setup! He also says that he has already removed the RAM, the GPU, the optical drives, etc.

However, he also says:
However, when I removed the processor, the PC starts up and doesn't turn off. However, there are no beeps from the motherboard?

Thank you for your replies!

The CPU is compatible with the motherboard since the PC has been running fine for a year. I also already did a CMOS clear which didn’t help... and there are no dead capacitors or burns on the motherboard.

So it's probably the pros even though it's very rare for an AMD to burn out!!

The Athlon and Athlon XP on socket A would burn out very easily, not too much those with a metal plate on top.

Etienne, in your place, I would try disassembling and reassembling; sometimes that's all it takes...

I just tried to take apart and reassemble the processor, without success. The PC starts and shuts down 3-4 seconds later, without beeping.... :-(

And when I disconnect the 4-pin power cable from the power supply, it doesn't turn off, but it doesn't boot, which is normal since it's the CPU power, right?

This confirms the hypothesis that the CPU is fried??
I'll just have to make use of the AMD warranty, hopefully......

Thanks for your help...!

For me, there's always a 50/50 chance that it's the motherboard or the processor...

Ok, so there's no way to know? Except for testing on another motherboard or with another processor, right?

The Athlon and Athlon XP on socket A burned very easily

Yeah, but that's not the problem with socket A (besides, they're more of an outdated product and very rare to find for sale!!)

It has an Asus M2NPV-MX

Micro ATX format
Processor Athlon 64 Athlon 64 FX Athlon 64 X2 Sempron
Type of socket AM2
Northbridge chipset NVIDIA GeForce 6150 / C51G
Southbridge chipset NVIDIA nForce MCP 430
Memory type DDR2

The chances that the CPU is the cause are low, especially if the PC has been running for a year and without overclocking.
A CPU burns out in the first month of use or never (if it is well-cooled).
So, I bet on the motherboard; it is the most fragile component of a setup.

However, it could come from elsewhere, maybe due to a shock, the card makes contact with the chassis and crashes due to a short circuit, this is more common than one might think.

In any case, both the CPU and the motherboard are guaranteed for 3 years; if one is indeed dead, it will be necessary to determine which one. The cheaper one to replace is the motherboard (less than €50).