Various causes: There are very many causes, from congestive heart failure, to lymphedema, to venous insufficiency, blood clots, pregnancy, a various other causes, including serious and not-so-serious causes.
I have a Sony DVP ns55p blu-ray player with a usb port in the front. The player requires that the usb flash device (thumb drive) be formatted in FAT32in order to recognize it.
Make the flash drive bootable. Use the bootsect utility that is shipped with Windows 7/Vista. To do so: 1  Insert the Windows 7/Vista DVD and note down the drive letter of the DVD drive. 2  For this guide, the DVD drive is D: and the USB drive is G:.