abort na bro,,, dili na ka handle sa imong mobo. all 65nm proc lang makaya .
Intel® Core™2 Duo Processor - Specifications
E7400 is 45nm.
ASUSTeK Computer Inc.-Support- <---- your mobo proc supported list
Core 2 Duo E6700 (2.66GHz,1066FSB,L2:4MB,rev.B2) <----- max proc supported sa imong mobo .this is 65nm.
note :

Intel® 65nm Dual-Core CPU support

This motherboard supports Intel® Pentium® D/Pentium® 4/Celeron® dual-core processors built on the 65-nanometer (nm) process technology with copper interconnect. Dual-core processors contain two physical CPU cores with dedicated L2 caches to meet demands for more powerful processing. Intel®'s 65nm process is the most advanced chip manufacturing technology, delivering breakthrough performance, enhanced media experience, and low power consumption. Intel® 65nm dual-core processors utilize the latest package technologies for a thinner, lighter design without compromising performance.