Optiplex 745 USFF Hard Drive Fan Failure Error

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Optiplex 745 USFF Hard Drive Fan Failure Error

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I have an Optiplex 745 ultra-small form factor unit. It has been giving us a "Hard Drive Fan Failure" error occasionally. It doesn't appear that the fan has completely died, because I hear it run for a while, and then it stops. What should I do about it?

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  • I have same problem with my dell optiplex. I re;laced the hard drive fan but still get error message hard drive fan failure. I cleared log but still get message

  • I took a 745 out of a dumpster at work, installed some missing stuff and it worked fine except for this annoying disk fan problem.  Got two new fans but no smiles.  Stumbled upon a solution by luck.  The plastic socket/shroud on the MB for the 5-pin fan plug is press-fit and you can pull it off.  You can then insert the plug directly onto the naked 5-pin header.  This provided a much snugger connection, I think because the the socket shroud reduced the length of contact between male header pins on the MB and female contacts on the fan cable.  The fan failure problem is gone.  With this solution you won't have a locking tab between plug and socket but the fit is so much tighter that the locking tab is unnecessary.