How can I get my usb drivers working?  

is it not called "universal serial bus controllers"

*update* just had a look on dell for you i see what you mean >>> http://support.dell.com/support/down...nConsent=False

Have you received your PCI card yet?

have you looked at the power scheme you are using and checked the usb settings there?

Reinstall the USB controllers
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1. Click "Start" button, type "devmgmt.msc" (without quotation marks) in the "Search" bar and press "Enter". Click "Continue" if necessary.
2. In Device Manager, double click to expand "Universal Serial Bus controllers", right click on the Host Controller, click "Uninstall" and click "OK".
3. Repeat the step 2 to uninstall all items under "Universal Serial Bus controllers".

Then, restart your computer and Windows 7 will reinstall all USB controllers automatically.

If the issue persists, also perform the following suggestions:

Delete the Upperfilters and Lowerfilters value for USB device
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1. Click the "Start" button, type "regedit" (without quotation marks) in the “Search" bar and then press “Enter”.
2. Navigate to the following key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{36FC9E60-C465-11CF-8056-444553540000}

3. Right click the {36FC9E60-C465-11CF-8056-444553540000} entry, choose "Export", select “Desktop” in the “Save in” box and type "backup" (without quotation marks) in “File Name”. Click “Save”.

Please Note: The backup file is on the Desktop and named “backup.reg”. We can simply restore the registry by double-clicking the “backup.reg” file.

4. Highlight this key ({36FC9E60-C465-11CF-8056-444553540000} ), on the right pane, and then check if “Upperfilters” and “Lowerfilters” value are present. If so, please right click on the values and select "Delete" to remove them.
5. Restart the computer to check the issue.

Tips for solving problems with USB devices>>> http://windows.microsoft.com/en-US/w...th-USB-devices

Open Device Manager by clicking the Start button , clicking Control Panel, clicking System and Maintenance, and then clicking Device Manager.* If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

Double-click Universal Serial Bus controllers and check to see if all your USB ports, hubs, and controllers are functioning correctly. Any devices not functioning will have a yellow exclamation mark in front of them.

If Device Manager shows any USB ports, hubs, or controllers are not functioning, check for updated drivers.

Hello again, did you get a PCI USB card or something like that?
Without reading the whole thread, have you tried a repair with Win7 Install DVD? Anyone could be used for this but would need to be activated with your original COA from the PC case.

Well crap! I was hoping that would work, it has me stumped my friend. USB active in BIOS but not Windows, very odd.
If you case has USB ports on it then they are connected to the motherboard with a little white, 7-pin connector, if possible, you could try a fifferent USB header on the board.

are you able to boot to safe mode? when you checked your bios what was the settings for the usb? and for the keyboard? and what was the setting for ACPI ?

have a read hear >>> http://www.usbman.com/Troubleshooter%20General.htm

http://www.usbman.com/USB_Guides.htm

The Windows 7 SP1 USB Driver Bug (what it is and how to fix it) >>> http://forums.mydigitallife.info/thr...-how-to-fix-it)