Lenovo M720s POST error

fireclouu

Fanatic
May Lenovo M720s ako na di gumagana, hindi ko alam saan ang problema, tumutunog yung error code na 2 beeps ang nakalagay sa manual, POST error

ito na mga nagawa ko:
  • RAM reseat
  • CPU proc. reseat
  • cooler okay naman
  • BIOS flashback
  • CMOS reset / removal
  • disconnect lahat ng component bago magboot, kahit SATA cable na hindi essential sa boot stage
additional info:
  • wala siyang bent pins sa CPU
  • nagtry na ako ng ibat ibang lanes sa RAM socket

brandnew and working ang RAM, working rin CPU
pero wala pa rin , ano kaya issue pag ganito?
 

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fireclouu

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