I need the size if my motherboard.

Oct 3, 2018
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I have a HP Compaq 8200 CMT PC. But my cpu socket dead. What is the size of the motherbord? I need to know this because i want to buy a another motherbord. Is it ATX? Can a MicroATX board sit in my pc?
Can you recommend a new motherboard? Thanks for helping.
 
From the pictures I saw online, (https://support.hp.com/hr-en/document/c02742846 ??) that is a proprietary motherboard. Standard motherboards will not fit into that PC.

Do you have an exact part number so we can be sure we are looking at the right computer (seems to be a couple different versions of the 8200).