The Intel Core i5-7400 is a desktop processor with 4 cores, launched in January 2017. It is part of the Core i5 lineup, using the Kaby Lake architecture with Socket 1151. Core i5-7400 has 6MB of L3 cache and operates at 3 GHz by default, but can boost up to 3.5 GHz, depending on the workload.
check your CMOS ,replace new than,please check SMPS is working properly or Not ,clean CMOS ,througth the hot blower heat the motherboard some than check again .
Could you please give more details. What is the motherboard make and model number?
Do you mean the power supply has no power or the motherboard is not responding that is no lights or fan movement?
mike さんによる
Elaborate your questions in details please?
wongcie さんによる