Hard drive data Loss can be caused by logical failure, firmware failure or hardware failure. Hardware failure contains the following situations: Hard drive develops bad sectors; Power outage damaging the electronic components, PCB burnt, ROM chip damage; Head damage/head contamination; Head crash; Spindle motor; Drive was dropped; Natural disaster .

WD20NMVW-11W68S0 head replacement tool is available within the level 2 head comb suite or WD hdd head comb suite. WD20NMVW-11W68S0 HDD ID: Laptop hard drive, 4 platters and 8 heads; Head comb to be used: W2 4 When the hard drive has clicking noises by head damage, users need .

WD10JMVW-11AJGS4 is one WD USB3.0 My Passport hard drive. It has 2 platters and 4 heads. This is one very common data recovery case within our data recovery lab, when it is physically damaged, users need to find one donor drive of the same PCB number to swap the .