LG D686 Full flashing ok not power on

I threw the phone flash to clear the virus but not power on. help me please?

Octopus log is here

Welcome to Octoplus/Octopus Box LG Software version 2.1.7
——————————————————————————–
Checking data…OK
Platform: LG MTK
Selected port: COM10
Selected baudrate: 921600
Selected model: D686
Selected USB connection type
Please, reconnect battery and connect cable…OK
Phone found.
CPU name: MT6575
CPU revision: 8B00.CB00.E201.0000
Setting power state…OK
Prepairing loader…OK
Sending loader…OK
Synchronizing with loader…
Loader version: 3.2.132
Detecting flash chip…OK
Detecting EMMC flash chip…OK
Reading info…OK
Opening "V20E_00.oct"…
Writing Firmware…
Formating filesystem…OK
Unlocking Bootloader…OK
Writing FILE_INFO…OK
Writing MBR…OK
Checking partition…OK
Writing EBR1…OK
Writing EBR2…OK
Writing EBR3…OK
Writing UBOOT…OK
Writing BOOTIMG…OK
Writing RECOVERY…OK
Writing SEC_RO…OK
Writing LOGO…OK
Writing PERSIST…OK
Writing CUST…OK
Writing ANDROID…OK
Writing CACHE…OK
Writing USRDATA…OK
Checking partition…OK
Writing __NODL…OK
Finalizing…OK
Writing firmware done!