Boot Error

Did you test your RAM?
How did you make the USB boot device?
Can the system boot USB?

Did you test your RAM?
How did you make the USB boot device?
Can the system boot USB?
Did you MD5 test the ISO you downloaded?

How do I test the RAM?
I made it with Unetbootin
I think so. In BIOS it say Boot from USB. And I enabled it.
When I start the computer, I press F10 and it gives me what hardware to boot from. Either my HD or my USB and I click USB, then it loads then says Boot Error.
And how do I MD5 test?

https://help.ubuntu.com/community/HowToMD5SUM

I'm running Windows. I'm trying to get Ubuntu. I already know the iso works though because I used it on my other computer.

So reformat your USB drive and burn the ubuntu.iso file again. Something is obviously wrong.

If you know (think?) your .iso image is OK (that it works on another machine is not actually proof that it's OK, since different data on the created installation medium may be used to run/install on different physical hardware), then you can make sure the USB flash drive was itself correctly written to, and that it is fully readable on the machine on which you are installing, by booting from it on the machine on which you wish to install, pressing Spacebar when the person and keyboard icons appear at the bottom of the screen, and selecting your language and "Check disc for defects".

If you cannot even get this far while attempting to boot it on the machine on which you want to install, then the next best thing to do is to run that "Check disc for defects" test on your other machine (the one that does boot it).

If that reveals an error, then you should make sure that the MD5SUM checks out on the .iso image, and make sure you're writing it correctly. Otherwise, please reply and tell us more information--specifically, what is the exact model of your eMachine, what is the full and exact text of the boot error message, and are you able to get another live USB (for example, a dedicated memtest86+ "live CD" for testing the eMachine's RAM) to boot? If you are able to get a live USB with memtest86+ to boot, then please also use that to fully test your RAM, and report those results as well.

Do you have a link for the memtest86+? And what do I do after I download it?

http://www.memtest.org/

http://www.memtest.org/#downiso

What do I do now?

Burn the .iso to a CD/DVD or write it to a USB flash drive. If you're running Ubuntu, you can use the instructions for writing it to the USB flash drive at http://www.ubuntu.com (for writing an Ubuntu .iso image to a flash drive). If you're running Windows, you can use the "Auto Installer for USB Key" (listed on the memtest86+ download page).

Then boot from the CD or USB flash drive, and use the utility to test your memory.

It won't boot. It just says Boot error.. then there's a blinking line under it. Then it loads up windows. I Already know it boots from USB because it has a boot from removable devices and boot from USB option. But My dvd drive is only a reader, not a writer.

Is that to say that it's not just the Ubuntu live USB that won't boot, but the memtest86+ live USB as well?

Pretty much. Any Idea why?

Either the USB flash drive is incorrectly written (or broken), or the computer is unable to boot from external USB drives. If, like the Ubuntu install media, the memtest86+ live USB also boots on the other computer, then the problem is almost certainly with the computer rather than the USB flash drive or the way in which it is created. The existence of an option for booting from external media does not ensure that your computer is capable of doing so--it only means it's capable of doing so **when it is working correctly**. There might be something wrong with your computer. This could be a problem with your RAM, but you probably don't have another computer that will take that RAM (so you can test it), so you probably cannot check for that directly.

I recommend going into the BIOS setup and making sure that all the settings look OK and there isn't anything that looks like it could be causing problems. Then, check your BIOS firmware version--there might be a BIOS update that fixes bugs. If none of that succeeds, you may need to call technical support for your computer, or even send it in. Before doing so, if you can, it would be a good idea to see if a physically different USB flash drive (or USB hard drive) will boot--sometimes, when a computer has problems, they are problems that occur only with some devices (even if there is nothing wrong with the devices with which they occur).

I'll try another USB. I've done the BIOS thing. I may just contact the Technical support.