What do i do is i didn't remove it safely from the computer the first time i tried to use it. my computer doesn't even register that is in the usb port

oh a fun one. Reset your bios to defaults. if that doesn't work then try a windows disk boot up. if that doesn't work you're screwed.

if you want any of your files from the computer first pull out the hdd buy a cord and transfer them to another computer.

Hi,
Considering the change in time and date,I would suggest you replace the CMOS battery.This battery helps in memory storage of your PC.
Have you tried the charger on another PC maybe?Try it,and if it fails replace it.
Remove the hard disk and re-fix it again.

Hope this helps.Thanks!

did you format it before using it

Make sure it's not appearing in "my computer" as a removable drive. If it isn't, you can try using a card reader for downloads.

You have to plug the usb cable into the PS3 and then the sixaxis. The PS3 doesn't recognize them because you reset the entire system. This is the same thing that you have to do when you buy a new one that didn't come with the PS3 at the start.

Have you tried booting into safe mode and seeing if the problem persists? If it can be detected in safe mode, then there is a possibility your USB drivers are corrupted, and will need a re-install. To do this, remove all USB devices from ports, disable USB in your Start/Settings/Control panel/System, and reboot. Windows will then detect them at boot, and install the drivers needed to get them back up and running again.
Hope that helped.
Cheers from NZ

Try starting up in safe mode by pressing f8 on a pc and reformat the card.

update or rollback the card reader driver !!

right clik on my computer icon then cliko n property then hardware then device manager then uninstall all usb drivers then resatrt your computer then connect your scan disk and check .
Thjanks for using fixya .
Please rate my solution if it helps.
Also check your usb adapter is working fine try in other computer.

Make sure the camera is on and pc is selected on the camera screen when connected to the computer. You will need to have PC highlighted and select ok on the camera as this starts the camera and computer to communicate. Once communication established the LCD screen of the camera goes dark and the computer should generate a removable disk drive. Check the System Tray (lower right corner beside the PC time) for Safely Remove Hardware. When you click on it, it should read "Safely Remove USB Mass Storage Device Drive ?:" If you dont see that, then check the Device Manager to see if the camera is recognized as USB Mass Storage Device. The camera uses the driver usbstor.