Camera not being recognized AT ALL!

I've been to other forums and found a similar problem where a bubble pops up saying the device is not recognized; the solution was to unplug the computer for 20 mins. I tried this for my problem and it didn't solve it.

Basically, I plug in my camera via USB 2.0 cord and turn it on but there's no sign my computer has any idea it's there - no *belunk* noise, no "Removable Drive F:" in My Computer, NOTHING. *sigh*

I've reinstalled the software and drivers from the CD, installed latest driver from Nikon's website, confirmed on the camera that it's got the latest driver, I tried Adding New Hardware.. NOTHING.

In Device Manager, under "Other Devices" is a "RAID Controller" located in PCI slot 9, with no drivers installed. This may just be there because of my attempts to install new hardware, though.

The only thing I've done recently is kill a nasty virus using other programs and some regediting. I'm pretty sure I didn't delete any registry files that would cause something like this but I'm no expert either.

Please help me if you can. Thank you.

-Perry U.