I showed my mom Chromium OS and she really likes it want wants to use it on her computer, so I put it on a flash drive. The flash drive will boot and work fine in my laptop, but not in my mom's, which is an HP Probook 4525s. I've set the boot device order correctly, but the computer won't boot from the flash drive, it'll just go straight to Windows, even if I manually select to boot from the flash drive. I've tried a 4GB flash drive, a 8GB flash drive, and a 4GB sd card, and none of them will work on her computer (but they work on mine, which is a Samsung r540). Can anyone help with this?