I switched back to Windows 7 for a while after installing and using Ubuntu 12.04 on a regular basis. I decided to reinstall Ubuntu using a flash drive I had used for it last time.
The flash drive I am using is a Verbatim 16GB, with a 2GB FAT16 partition I made to use install Ubuntu.
The problem occurred when I installed Ubuntu alongside Win7. After installing "successfully", I rebooted my computer without my flash drive in and was expecting to be greeted by a boot menu asking whether or not I wanted to boot in to Windows 7 or Ubuntu. Instead, I was greeted by a black screen with a blinking underscore as if it was waiting for me to provide input. I pressed a button on my keyboard and it returned something along the lines of "A bootable device was not detected -- please insert boot disk and press a key."
The system boots fine in too Ubuntu while my flash drive is plugged in a USB port.
I have tried to look to see whether my Windows partition is still intact using the GParted tool. Ubuntu can't find anything for "GParted". I went to the Software Center to try and install, but it apparently doesn't exist after I click "More Info".
I am hoping that Windows 7 is still intact, and that Ubuntu can be installed normally.