6050a2892401-mb-a0 HP Elite book 850 G3 ok bios 7 march 2022 tested ok by expert ctlab is the trusted partner of right now laptop repair service in Bangladesh OFFICE TIME: 10 AM TO 8 PM LOCAL BIKASH MARCHANT: 01999992701 BIKASH PERSONAL/NAGAD: 01971143454 BIKASH REFERENCE: BIOS04