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new update here https://vinafix.com/threads/hp-elitebook-6930p-karia-discrete-07219.3554/
Available https://vinafix.com/threads/satellite-c55-c-pscp6e-pscp7e.18310/#post-68038
black screen, a lot of reasons, keep ec, try Programming PCH and check hardware.
https://vinafix.com/threads/acer-spin-5-sp513-51-16801-1m.33060/
Acer Spin 5 SP513-51 - 16801-1M 16801-1m.brd boardview BIOS VIBI0 1.11.bin
700-17ISK Laptop (ideapad) ideapad 700-15ISK, 700-17ISK BIOS e5cn62ww
710S Plus Touch-13IKB Laptop (ideapad) 710S Plus-13IKB, 710S Plus Touch-13IKB BIOS 3ncn33ww
720-15IKB (Type 81AG) Laptop (ideapad) BIOS 5lcn31ww
720-15IKB (Type 81C7) Laptop (ideapad) BIOS 6PCN21WW
720S-13ARR Laptop (ideapad) (Version 1703) - 6KCN30WW (Version 1709) - 6KCN38WW MB NM-B411
720S-13IKB (Type 81A8) Laptop (ideapad) BIOS 5SCN38WW Schematics LCFC NM-B491 ES322 ES323 LCFC Confidential 1ES322/ES323 NM-B491 MB Schematics...
720S-13IKB (Type 81BV) Laptop (ideapad) BIOS 6MCN27WW DS321 NM-B331 Rev 0.2
720S-14IKB (Type 80XC) Laptop (ideapad) 4VCN44WW (V2.10)
720S-14IKB (Type 81BD) Laptop (ideapad) BIOS 6lcn20ww
720S-15IKB Laptop (ideapad) 720S-15IKB, 720S Touch-15IKB 720S-15IKB Laptop (ideapad), (Type: 81AC) BIOS 6TCN32WW MB LS720 17823-1N
old and laptop error what before ? can laptop not error BIOS.
you can find try security and disable it....
need check hardware where all bios same problem.
450R4J -BA41-02382A 450R4Q RAMOS-14R REV1.0 N15V-GM-S-A2
450R4J -BA41-02382A