G62-355dx cpu replaced still not working

My g62-355dx is still not working after replacing the cpu (thats what the blink code was....caps lock blinking once every few seconds) so after replacing the cpu I am still getting the same blink code....tried the hard reset before replacing the cpu but havent tried it after....I just need to know if its possibly the mother board and if a motherboard from a different g62 model will work in my 355dx....
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This is about the third post of its type I have fielded in the last month or so and I will repeat what I have always maintained. It is almost never the CPU, regardless of the blink code. It is almost always the motherboard. Your by far safest bet is to replace like with like although likely another g62-300 series motherboard will work, if it has any feature yours did not or vice versa it may take some case mods to make it fit and you want to avoid that.
You will need the Service Manual:
.pdf of manual here
Your motherboard part number can be found inside the memory compartment. Post back if you want detailed help finding a replacement.

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