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by internet research it was compatible with E5700 processor(Pentium D 3.00 Ghz, 800FSB
Yes for the first CPU, no for the second (they are two different items). If you're trying a Pentium D then that's your problem. You can see the list of compatible CPUs (including any minimum BIOS versions and hardware requirements etc) here.
thanks for your reply
I have noticed that Pentium D processor was not compatible and i had to replace it with E8400 which is working fine.