@australias follow this look what was wrong with this one from you (there's a point at my post which blood and unerlined ) Step 3: Plug the SATA power cable into the drive, and wait until drive motor stops. Step 4: Open Hyperterminal, when prompted choose the COM port that your cable is using. If you are unsure of which COM port to use, check your device manager (look in the "ports" sub-section) to see which COM port your cable is using. Choose 38400, 8, None, 1, None in the COM properties box that should pop up. If you hit "OK" and you get no errors, you should be in. Step 5: Type ctrl+z and you should see a prompt that says F3 T> Step 6: Type /2 and press enter. It should say F3 2> Step 7: Type Z and press enter. It should say "Spin Down Complete, Elapsed Time 0.146 msecs", the elapsed time may not be the same - that's OK. Step 8: Remove business card and mount the PCB as normal, tighten up all the screws. Step 9: Type U and press enter. It should say "Spin Up Complete, Elapsed Time 6.864 secs". Again, the elapsed time may not be the same and that's OK. This next part is not necessary, it's just checking that everything is OK. Use this when the first try fails (command F712 works only on 500 GB 7200.11 drives with firmware SD15, if this isn't your Firmware version just skip this part.) Type / and press enter. It should say F3 T> Type F712 and press enter. It should say..... Byte:0712: RealTimeUpdatedFlags = 00 00 Byte:0712: Bit:0, HPA_SET_BY_SETMAX = 0 Byte:0712: Bit:1, HPA_SET_BY_SETMAX_EXT = 0 Byte:0712: Bit:2, DCO_SET_ACTIVE = 0 Byte:0712: Bit:3, CONGEN_READ_FROM_MEDIA = 0 <- configuration not loaded from surface Type F,,22 and press enter. It should say Drive Configuration restored to defaults. Type F712 and press enter. It should say..... Byte:0712: RealTimeUpdatedFlags = 08 00 Byte:0712: Bit:0, HPA_SET_BY_SETMAX = 0 Byte:0712: Bit:1, HPA_SET_BY_SETMAX_EXT = 0 Byte:0712: Bit:2, DCO_SET_ACTIVE = 0 Byte:0712: Bit:3, CONGEN_READ_FROM_MEDIA = 1 <- done (This is the end of the part that was not necessary unless the first try failed). Step 10: You should see F3 T3> at this point, type /1 and press enter. It should say F3 1> Step 11: Type N1 and press enter. It should say F3 1> Step 12: Type / and press enter. It should say F3 T> Step 13: Type m0,2,2,0,0,0,0,22 and press enter. (Note the "m" is lower case and the 0's are zeros). It should say..... Max Wr Retries = 00, Max Rd Retries = 00, Max ECC T-Level = 00, Max Certify Rewrite Retries = 0000 User Partition Format 5% complete, Zone 00, Pass 00, LBA 00008DED, ErrCode 00000080, Elapsed Time 0 mins 05 secs User Partition Format Successful - Elapsed Time 0 mins 05 secs And should bring you back to the F3 T> Prompt. Step 14: Unplug the SATA power cable from your drive, unhook the RX, TX, and GND wires. Turn off computer and re-install your drive. Everything *should* be working fine. Be sure to update your drive with the latest firmware as soon as possible.