How do I get my 3.0 USB ports to work?

I am working on a dell laptop XPS 502X running windows 7 professional. I cannot get the 3.0 USB ports to work. I have been to the Dell website as well as the Intel website. I have not found a way to have a driver for this actually install.
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dbruntonQuid, Me Anxius Sum?  Illegitimi non carborundum.Commented:
From the Dell site, first, install the Intel chipset drivers.  Then install the Reneas USB 3 drivers.

Note that the link is for an early version of the XPS.  Not sure if it applies to you.
JohnBusiness Consultant (Owner)Commented:
Please let us know about the above post. Windows 7 does not natively support USB 3 so the vendor (Dell) must provide drivers.

My Windows 8.1 machine provides USB 3 and I think Windows was the first OS to support it.
mobilecomputerdocAuthor Commented:
I have already been to the Dell website and installed these drivers. It does not solve the problem.
I have never seen a laptop of this age with two 3.0 usb ports and only one 2.0 port. The device manager reports that the universal serial bus and an unknown bus have the yellow ! marks.
I was able to install the PCI controller driver that was missing but it didn't help with the USB problem.

I go through the upgrade process but at the end it says it is unable to install a driver. I went to the Intel site and found nothing there that would help.
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JohnBusiness Consultant (Owner)Commented:
If Dell does not supply suitable drivers then you cannot use USB 3 on your Windows 7 machine.

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dbruntonQuid, Me Anxius Sum?  Illegitimi non carborundum.Commented:
Have a look at the following tutorial

Warning:  You may need your restore Windows 7 DVD for repair purposes if the system doesn't pick up your USB ports correctly.  This has been know to happen.
mobilecomputerdocAuthor Commented:
Thanks for the comments. It seems that there are hundreds of people with this problem on the Dell laptops. After six hours working on it I think my time will be better spent just moving on with other repairs.

Thanks to everyone for the help.
post a screenshot of device manager plse  - showing any errors
mobilecomputerdocAuthor Commented:
After spending hours on the phone with dell they say that this problem is an Intel problem. Intel says it's a Dell problem. After many hours researching this problem online I have found no less than 50 people with the same problem. Everyone has tried everything and nothing works. I took mine to a Dell master technician and he said this is a design problem with the motherboard. There is no need to waste any more time with fixes as none of them will work. But thanks for all the help.
JohnBusiness Consultant (Owner)Commented:
Windows 7 does not natively support USB 3, so if drivers are not available, then you must use USB 2.
I've requested that this question be deleted for the following reason:

Not enough information to confirm an answer.
JohnBusiness Consultant (Owner)Commented:
This question was answered.

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