blackbut

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About blackbut

  1. Have you unmounted the PCB? Yes I isolated PCB before powering on and remove the paper after Z. then U. Anyway it seems partially work even I didn't see the success message. I have redone the whole procedure again. Now BIOS is showing correct capacity. But shortly after windows starts, it gives me blue screen and reboot to a menu and let me choose to boot to repair mode, then windows did some test and says fixed, but next reboot still fails. I guess there may be some bad sectors causing windows not be able to load. I'm using seatools to check the disk now. Anyway I believe some data may be corrupted but some data should be accessible now. I'll get a sata cable to install to my computer to copy over data. At least this is a big step forward. Big thanks to all of you for all advice on this thread! I think paper method is a bad method (sometimes it has a lot of problems). Unmount the PCB, clean the contacts (motor and heads and PCB contacts too) and mount the PCB tightening the screws for make good contact. I plugged the hard drive to my computer and all the data are readable. Now I have copied all data and am going to return it to Dell. I want to thank you guys who wrote all the helpful comments!
  2. Have you unmounted the PCB? Yes I isolated PCB before powering on and remove the paper after Z. then U. Anyway it seems partially work even I didn't see the success message. I have redone the whole procedure again. Now BIOS is showing correct capacity. But shortly after windows starts, it gives me blue screen and reboot to a menu and let me choose to boot to repair mode, then windows did some test and says fixed, but next reboot still fails. I guess there may be some bad sectors causing windows not be able to load. I'm using seatools to check the disk now. Anyway I believe some data may be corrupted but some data should be accessible now. I'll get a sata cable to install to my computer to copy over data. At least this is a big step forward. Big thanks to all of you for all advice on this thread!
  3. Hi guys, I have a Dell OEM 7200.11 750G drive and it went undetected. I am following the procedure to reset the hard drive. After I entered U to spin up, it is stuck at the command and doesn't go back to F3 2> even for a long time. Then I pressed enter, it give me the F3 T>, and I went to level 2 to spin up again, it says spin up complete elapsed time 0.000 secs. So I went on executed N1, then m0,2,2,0,0,0,0,22. The last command didn't go back to F3 T> as well for 10 mins or so. I powered off and installed to my computer, it is now detected by BIOS but capacity is unknown. What should I do now? Any help will be appreciated! Thanks in advance!