Hi,

My HDD is not recognized in BIOS.

I want to tell you the whole story how it is happened. I had around 50Gb files on my desktop and my HDD was 99% full. I moved them all to a new created folder on desktop. After I moved explorer.exe was hanging and crashed. My laptop is directly connected by power supply [I don't have a laptop battery].

I restarted my laptop by unplugging the powersupply, OS (win7) tried to load... very slowly and chkdsk started. I didn't wanted to wait, so I unplugged the power supply again. From that moment computer freezed and even bios couldn't get loaded. I removed the HDD and tried to get my files using an other system, I have a SATA to USB cable but hdd didn't got recognized. The disk is spinning, no weard sounds. But when I unplug the usb cable (power off) I hear a clear "shut down" sound of the motor inside it.

I ordered a new PCB from ebay. same ML, sticker serial + PCB serial. After I swapped the PCB the laptop gives ERROR 0200: Failure Fixed Disk 0. There is no 8 pin smd chip on the PCB that I could transfer, does anyone got cheap diy tips that I can try?

HDD INFO:
S/N: WXM0A99K9630
MDL: WD5000BEVT-22ZAT0
WWN: 50014EE2AE4DF0D2
DATE: 12 NOV 2009
DCM: HBCVJHBB
DCX: K003Z9TA9
LBA: 976773168
5VDC: 0.55A
R/M: 701572

2061-701572-400 AB (sticker)
2060-701572-002 REV A (PCB)

More than likely it is not a PCB issue.
Try MHDD and report if drive IDs correctly.

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Hard Disk Drive (HDD), Solid State Drive (SSD, SATA, NVMe, etc), USB Flash Drive and RAID Data Recovery Specialist in Massachusetts

Check SMART.
Then probably you have to clone it to another HDD and after than recover data from the clone.

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data recovery Poland