I have an Acer Aspire 5741, and it ended up getting knocked onto the ground, and then it gave me the PXE-E61: Media test failure, check cable message. At the time, in the setup menu, it wouldn't even recognize my harddrive. Therefore, just to make sure it was a harddrive problem, I put the harddrive from my friends laptop into mine and it worked, and put my harddrive into his, and it didn't work. So I went out and bought a new harddrive, which is recognized in the boot priority order tab of the setup menu, but it still gives me the PXE-E61 message.