Download the cab file

https://dl.dell.com/FOLDER01646012M/1/T7610-win7-A00-3512W.CAB

then move that file to the my documents folder

Then INSTALL 7ZIP

https://www.7-zip.org/download.html

THEN right click on the cab file in my documents folder with 7zip and say EXTRACT HERE

Then go into device manager and update yellow! for usb3 and chipset etc.

Tell it to update from my pc instead of the internet

it will auto install the RENESAS USB3 drivers.

windows 7 does not have native usb3 drivers

Clean install of windows REMOVES the Renesas USB3 drivers.

You must first download the cab file with ALL drivers

https://dl.dell.com/FOLDER01646012M/1/T7610-win7-A00-3512W.CAB

Driver Pack Contents Information for: Precision - T7610

Many thanks for your reply. I rolled windows back to the earliest installation point which was before any of the drivers were installed. I then manually updated each unknown item in device manager, pointing to the extracted CAB directory so that each driver came from here.

This didn't work. I still see no USB3.

I also then installed the full Renesas driver (NEC USB3.0 xHCI Driver) from the dell website to see if that  picked up the missing USB3 in device manager. No joy. Within device manager I have now just one triangle (which is the USB mouse and a fingerprint reader - drivers are not yet installed). Everything else shows it is correctly installed. I've tried a second mouse just to be sure this isn't the issue.

I've also clicked on each USB device and manually pointed these to update from the extracted CAB folder to see if there is an alternate driver there I could use. Again, no success.

I've looked at each USB device ID to see if any relate to Renesas.

For example USB\VID_18A5&PID_0304 is the USB flash drive etc. None listed in device manager relate to Renesas or NEC.

This page here describes a T7600 (not T7610) how the USB3 is implemented:

<ADMIN NOTE: Broken link has been removed from this post by Dell>

It says:

At boot, the USB 3.0 capable port is USB 2.0. If USB 3.0 is enabled on the port, the OS begins loading and the USB 3.0 driver is loaded within the OS.

At that point, the port is muxed over from the USB 2.0 controller (in the Intel chipset) to the NEC USB3 controller. The USB 3.0 implementation was designed to support USB 2.0 in DOS (so the port was not dead at boot or in DOS), but it will not support booting from an external OS with USB 3.0 enabled due to the transition that occurs between USB 2.0 and USB 3.0 while the OS would be loading on that port.

In essence, the user is trying to load content they need for USB 3.0 (the driver) while the system is transitioning between USB controllers.

I wonder if the same happens on the T7610? It too uses NEC / Renesas.

I am beginning to think this might be BIOS related? There are similar posts of T7610 users encountering the same - and none report a resolution:

https://www.dell.com/community/Precision-Fixed-Workstations/Precision-T7610-USB-3-0-Not-Working-Win10-x64-Install/td-p/7192996

https://www.dell.com/community/Precision-Fixed-Workstations/Dell-T7610-Precision-USB-3-0-Stopped-After-Bios-A18/td-p/7424738

I have not made any further changes yet to the installation if you can suggest further things to try?

Thanks

Thanks for the reply. I'm not quite sure how it is rootkit malware? This was a fresh new SSD when installed last week when I installed Windows 7.

I downloaded Windows 7 pro from Dell website directly, installed it via a freshly formatted USB (it formats it when preparing the Dell recovery). The T7610 has not yet connected to the internet, it has no network cable and it does not have a Wi-Fi dongle. The only few drivers which are installed as per the Dell instructions have been individually copied over on a flash drive, all directly downloaded from the Dell website. It is about as fresh as can be.

I actually chose to 'downgrade' to Windows 7 for the installation because I prefer it. The machine came with windows 8, with the option to roll back to Windows 7.

I appreciate Windows 7 is no longer a supported OS but the machine was originally supplied with Windows 7/8 so the USB3 hardware should work with the appropriate drivers?

A bit more info:

as suggested above, I have individually uninstalled the various USB drivers in task manager. I then tried windows reinstalling these automatically (device manager > scan for hardware changes) and also by manually running the Renesas USB host driver installation program to reinstall each missing driver.  Neither route worked.

It may not be related at all but I’m also seeing the fan speed control not performing as per the BIOS setting after updating the BIOS. For example I set it to medium-high but after a restart or two it performs as if it is on auto despite it still showing medium high in BIOS. I am going to reset the BIOS to defaults and see if that fixes anything. 

A few extra reboots fixed the fan issue so probably not related.

I’ve tried uninstalling and reinstalling, tried various drivers and lots of restarts and fresh installations over the last few days. I don’t think it’s the driver, I think it is something to do with the BIOS.

USB3 doesn’t show within the device manager nor is there anything suggesting the hardware is visible but needing an update. I’ve checked all the device IDs and nothing relates to the missing hardware. It is as if the OS doesn’t see the Renesas USB hardware at all.

For anyone else considering a BIOS update on the T7610 my advice would be to be cautious. The forum links shared above also show others had problems when updating the Dell BIOS, this appears to be a potential problem shared by a few people. I will keep trying different things and if I have any joy will post back.

If anyone has something to suggest please leave a note and I’ll give it a go. 

Hi @Huffle , any luck with this?