Anyone experienced a CPU failure before? My PC died (won't even boot up hard disk or BIOS). Changed the motherboard, checked the PSU with a volt meter (its fine) and double checked my connections.

Running an AMD Athlon 3200 - shows no visible signs of damage. Less than 8 months old.
I doubt my new motherboard is DOA since it shows power to the RAM modules (LED display). - anyone got any clues? I'm puzzled.
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"There comes a time when you look into the mirror and you realize that what you see is all that you'll ever be. Then you accept it... or you kill yourself. Or you stop looking into mirrors."
- Londo Mollari, Babylon 5

exactly what happens when you turn it on?
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Literally nothing happens. No boot, nada. Hard drive doesn't even spin!
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"There comes a time when you look into the mirror and you realize that what you see is all that you'll ever be. Then you accept it... or you kill yourself. Or you stop looking into mirrors."
- Londo Mollari, Babylon 5

Checked the RAM on my other system. Works fine.
I think it has to be the CPU, either that or my motherboard was dead on arrival.
Sending it back to ebuyer - hopefully they'll confirm the problem.
Either that or i end up paying for shed loads of postage!
_________________
"There comes a time when you look into the mirror and you realize that what you see is all that you'll ever be. Then you accept it... or you kill yourself. Or you stop looking into mirrors."
- Londo Mollari, Babylon 5

Is it plugged in?? (Sorry couldn't resist!)

actually imma educate you LMAO

Upon starting, a personal computer's x86 CPU runs the instruction located at the memory location F000:FF00 (on 286s and 386SXs, the base of the code segment is actually 0xFF0000 and on 386s it is 0xFFFF0000) of the BIOS. This memory location is close to the end of system memory. It contains a jump instruction that transfers execution to the location of the BIOS start-up program. This program runs a Power-on self test (POST) to check that devices the computer will rely on are functioning; it also initializes these devices. Then, the BIOS goes through a preconfigured list of devices until it finds one that is bootable. On the original IBM PC, if it finds no such device, control is transferred to IBM Cassette BASIC. On more modern machines with no built-in operating system, an error message is generated and the boot process stops. If the BIOS finds a bootable device, it loads and executes its boot sector. In the case of a hard drive, this is referred to as the master boot record (MBR) and is often not operating system specific. Usually, the MBR code checks the partition table for an active partition. If one is found, the MBR code loads that partition's boot sector and executes it. The boot sector is often operating system specific, however in most operating systems its main function is to load and execute a kernel, which continues startup. If there is no active partition or the active partition's boot sector is invalid, the MBR may load a secondary boot loader and pass control to it and this secondary boot loader will select a partition (often via user input) and load its boot sector, which usually loads the corresponding operating system Kernel.

hope that helps any, or it may just blow your mind to shreds i dunno LMAO
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Tested my PSU with a voltmeter, works fine. Tested it with another PSU but still no output. Still no video output, and no, the CPU fan doesn't spin (although it was absolutely clogged with dust and fluff - makes me think it may have overheated and died, although it doesn't show any visible signs of damage. Case is fine and all the jumper settings are correct.

Sending the CPU back - if it proves to be working then I guess its my new motherboards that's screwed. Which is a pain to say the least since I need an AGP board for my Nvidia 6800 ultra!
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"There comes a time when you look into the mirror and you realize that what you see is all that you'll ever be. Then you accept it... or you kill yourself. Or you stop looking into mirrors."
- Londo Mollari, Babylon 5

Hmmm, does sound dodgy, i doubt the CPU would have overheated, they tend to simple turn off if they do, mind you anything can screw a PC, a thunderstorm has been known to fry lots of gear, i once lost my PSU, my CPU, my GFX and Hard-drive because of one power surge during a bad electrical storm.
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I'm using a Hiper 580W Type-R Modular PSU (not cheap) - http://www.hipergroup.com/English/products/hpu-4k580.html so I doubt that's failed. This one's got me really puzzled.
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"There comes a time when you look into the mirror and you realize that what you see is all that you'll ever be. Then you accept it... or you kill yourself. Or you stop looking into mirrors."
- Londo Mollari, Babylon 5

questions to ask -

have you had any power surges, brown outs ?
have you over clocked your CPU ?
has the CPU fan been working ?
has the CPU been subject to any static (even the smallest amount kills CPUs) ?

Have you tried resetting the CMOS jumper to wipe the BIOS ?
Check case to see if any loose screws or other metal objects that could have made contact between back of Mobo and case.

If you have a friend that has a PC with the same CPU ask him to test yours.

When the PC died what happened just previous when using it ? slow processing, system freeze ups etc etc

Other things to consider :-

New mobo and CPU compatibility, some motherboards will not accept certain processors until the updates come out for example :-
asus plat 975x v1 mobo doesnt run dual core until v2 was released.

goto manufactors website and check any compatibility issues.

CPU's can indeed overheat, the temperature monitored shut down only works if you have set it up in the bios and doesnt always come set as default, people that arent aware of this tend not to set this feature so the CPU will indeed fry itself if the fan fails.

I've repaired quite a few comps like that.