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alert rare fan failure optiplex 745 sff plz help me

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at start up this message appears alert rare fan failure strike f1 to continue

 

i have processor core to duo intel e 4400 i gb ram plz help me to fix the problem

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  • rear fan?

    The SFF Rear Fan is under the hard drive.

    1

    release tabs (2)

    2

    hard drive

    3

    hard drive bracket

    1. Connect the hard drive fan cable to the system board.

    2. Connect the power and data cables to the drive.

    Replacing Rear Hard Drive Fan

    1. Follow the procedures in Before You Begin.

    2. Remove the computer cover (see Removing the Computer Cover).

    3. Remove the hard drive (see Removing a Hard Drive).

    4. Turn the hard drive upside down, so that the hard drive fan is visible in the bottom of the drive bracket.

    5. To remove the hard drive fan:

      1. Lift the release tab on the back panel of the fan.

      1. Rotate the fan in the opposite direction from that indicated by the arrow on the back panel of the fan.

      2. Lift to remove the fan and its back panel from the hard drive bracket.

    DELL Hard Drive Blower Fan Plus Hard Drive Bracket and

    Fan Caddy for OptiPlex 760 / 740 / 745 / 755 SFF & Dimension 5200c SFF

    Dell Part Numbers: NY290, TJ160, NH645, NJ793

    Report Unresolved Customer Service Issues here
    I do not work for Dell. I too am a user.
    The forum is primarily user to user, with Dell employees moderating.

  • the problem is that there is no such fan in my box

    there are just 2 fans one is processor nd 2nd is power supply fan

    my pc worked normal but this message appeard now from 3 days

  • You have to open and look to see the hard drive fan its not visible without removing the hard drive.

    Report Unresolved Customer Service Issues here
    I do not work for Dell. I too am a user.
    The forum is primarily user to user, with Dell employees moderating.