Try mo nlng window mas ok .. card reader lang tpos follow mo nlng tong instruction ..
1. Connect the SD card reader to your computer by plugging its USB cable into one of your computer's available USB ports.
2. Insert the SD card into the SD card reader. Windows 7 will detect the SD card as an external storage device and assign it a drive letter.
3. Click the Windows "Start" button and select "Computer" to launch the native Windows 7 file manager.
4. Locate the drive assigned by Windows 7 to your SD card, right-click it and select "Format" from the drop-down menu.
5. Remove the check mark from the Quick Format option to ensure everything is erased.
6. Click "Start" to start erasing and to begin formatting the SD card. This might take some time, depending on the card's size.