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USB 2.0 ports not working on Precision M4500 laptop


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#1 norseman197

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Posted 26 January 2015 - 08:23 PM

I have a strange problem right now with my Precision M4500 laptop[8Gb Elpida 1333Mhz DDR3 RAM, 500Gb WD Black HD, Core i5@2.67Ghz]. I had wiped the hard drive by overwriting it with ones and zeroes. I then re-installed Windows 7 Professional 64 bit on the hard drive. I proceeded to install the necessary drivers in the order that Dell recommended. And I updated the BIOS to A15, if I'm remembering right. Unfortunately the USB 2.0 ports on either side of the laptop do not work. I tried uninstalling each port in Device Manager and then reinstalling, with no luck. I tried updating the drivers on the USB hubs and that didn't work.  I  tried updating the chipset drivers, but that didn't help the USB 2.0 port connectivity issue. So now I"m a bit frustrated to say the least. Does any one have any additional suggestions for things to try?

Oh yeah, I also tried to cycle the ports by connecting it up to a PR03X docking station and then disconnecting it. That didn't work either.

A further note: The USB ports seem to have at least some amount of power running through them, as I can hook up my USB powered Thermaltake laptop cooler to it and it the fan and blue LED light come one once connected.



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#2 dicke

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Posted 26 January 2015 - 08:29 PM

Welcome,

Have you downloaded and installed the USB drivers from the Dell site?


Stay well and surf safe [stay protected]

Dick E


#3 norseman197

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Posted 26 January 2015 - 08:41 PM

There do not appear to be separate USB drivers for download, unless they are misnamed or differently named. I installed the chipset drivers and updated the BIOS. I also tried deleting the USB ports and updating the drivers for each USB port. Neither approach worked.



#4 hamluis

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Posted 07 August 2015 - 03:00 PM

Go to Device Manager/USB Controllers...uninstall the drivers with "enhanced controller" in the description...leave everything else alone...reboot.  This should give you undamaged USB drivers.

 

It's the controllers that are important.

 

Louis






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