The only true way is to replace the CPU with a working CPU and see if it works. But, if all of your other hardware devices are working then you can bet it is not your motherboard. Another words if you are getting power to your motherboard and all your devices are working, but you are having problems with your CPU then you can bet it's the CPU.
Depends on what processor you're using. Go to the manufacturer's site and find the product, it should tell you the socket that the processor requires. Any motherboard with that socket will be compatible
This all depends on the motherboard and the processor type. Rule of thumb...If there is a release of some sort, a lever, a bush tab etc it is removable.
Motherboard
Processors don't connect to a motherboard, there are installed in a socket. What determines if a processor is compatible is the type of processor... PGA(AMD most of the time) or LGA(Intel) and the ammount of pins that are on the motherboard/processor.
"845G" is a chipset, not a processor. The chipset is actually a part of the motherboard, and should be advertised in it's specs.
If you spot the processor, it should be labeled right on there with a P4 or a PII just check the processor type and this could tell you the difference
function of the processor is to process data
The playstation 3 will not work.
Motherboard
processor
No, a processor is not fixed to the motherboard. Most modern processors are designed to be easily removable and replaceable using a socket on the motherboard. This allows for easy upgrades or replacements without replacing the entire motherboard.
A motherboard can support one processor only.