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.
However, there is a USB port on the blu-ray player. Should I be able to play blu-rays onto my laptop screen using a USB adapter? Is there any way to connect the player to the laptop? I know this will also require software and already have a program selected (PowerDVD).