Dell 3542 (FX3MC 13269-1) shutdown after 30 minutes

Hello Masters,
+ `, j/ B; ]& w% b! v( I; j# ]" L9 hI have Dell inspiron 15-3542 cedar_intel-mb 13269-1 fx3mc (core i5-4210U) laptop which has problem of shutdown after exact 30 minutes. I already have flashed the BIOS with different version and with CLEAR ME and also replaced BIOS IC but the problem remains same.
6 G" d3 q1 G! kI need help to solve the problem.
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都是啥 看不懂啊。