Bootcamp - No bootable device problem
I've been searching all over the internet for about 2 days now, and I still can't find a solution to my problem. I'm using an iso file of windows 7 home premium 64 bit in a 8 GB SanDisk Cruzer Glide USB flash drive, and I am using a MacBook Pro 13-inch (Late 2011). I have done all the correct steps in bootcamp, and my USB flash drive has one partition that is using the MS-DOS (FAT32) format, but when I came back after clicking the "Install 7 or later" step, I found a black screen that says: "no bootable device - insert boot disc and press any key". I know that in order to get out of that window you restart and hold Alt-Option when it reloads to select a disk, but all I get is the Macintosh HD and Recovery 10.9 ones. My flash drive is not a selection.I have read that the issue of having no bootable device is due to a damaged or corrupted iso file or disk, so I redownloaded my iso, and did all the steps again; however, it still failed.
Please help me find a solution because this has really been a pain.
Bootcamp-OTHER, OS X Mavericks (10.9.1)