Have you tried to connect the cameras more than just the USB port. If so, did work in another port. Likely by the sounds of you did and no USB ports detect them ... Am I right?
If so I recommend installing a different product USB as a memory stick / flash drive / external hard drive to see if it detects anything.
If none of the USB ports to detect all the devices then you can only do 4 things:
1. Boot BIOS and check the USB ports are enabled (if the model)
2. Reinstall the USB drivers
3. Update the computer BIOS
4. Reinstall the operating system
Business with :Dell 6Y270 Dell 75uyf XPS M170 battery Inspiron XPS M1710 battery Dell Inspiron 6400 battery.
The details are as follows.
1. Boot BIOS and check the USB ports are enabled (if the model)
Step 1: Turn on the computer and press any button on the screen says to enter "Setup" or can be called "BIOS"
Look through the options to reset settings option (I believe in maintenance) and accept that reset and do everything he says the screen to save and exit.
Test ports.
Unresolved? Continued ...
2. Reinstall the USB drivers
Step 2: In XP go to Control Panel and then select "Classic View" and then select "System" icon -> Hardware tab-Device Manager
In Vista and Windows 7, click Start and type Device Manager in the search field blank and press Enter
You open Device Manager. Now right click and select uninstall (or remove) all the ads that show a "!" or "?" and accept the deletion. If there are none like this that expand Universal Serial Bus Controllers section and uninstall / remove all the USB root hub and then close everything and restart your computer. Let me load up and wait about 1 minute to finish its trying to install the missing drivers on its own. Now, go back to Device Manager and see if there are any "!" or "?" if not then try the USB port and it should work. It 'very rare for ALL USB ports to fail.
("!" It means that there is a conflict or a problem with the driver. "?" Means that there is no driver installed for that particular part), if not resolved, conitinue ...
3. Update the computer BIOS
Step 3: If the USB ports work rather than go to Dells site and up date your BIOS. Let me give the link if you provide the model or service tag number. You'll have to look that up. Make sure that if you find one that you select the correct operating system or used to work.
NOTE: Never disconnect or turn off the computer while updating the BIOS. Updating the BIOS is "AT YOUR RISK" STEP RIGHT. If this is a laptop, plug the adapter into the wall for sure that your computer stays on.
If not resolved, conitinue ...
4. Reinstall the operating system
As a last resort, as an "attempt" to solve this problem is to reinstall Windows. This format the entire hard drive and restore your computer to how it was when purchased. Yes you have data, music, photos, videos and programs will be added and deleted only recover again.
