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I put the last Ubuntu iso on my USB stick using UNetBootin, after formatting it to fat32. I've already done that before with other operating systems and it worked. I can't actually boot Ubuntu from USB since I get a black screen with the error "Machine check error" on top the an automatic reboot happens. The error appears right after the boot, I can't see anything else before.

I'm using my ASUS K53SV latop. Does anybody know how to solve this?

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Check and see if there is a BIOS update for your system. – Mitch Jun 28 '12 at 17:30
I already did, I have the latest BIOS, thanks! And I do remember in the past I was able to run a Live Ubuntu from USB, maybe it was with the previous version. – javanna Jun 29 '12 at 7:32
How old is the laptop? Because the error says that there might be a fault in the CPU. – Mitch Jun 29 '12 at 7:40
The laptop is 8 months old and is working fine. – javanna Jun 29 '12 at 7:59
I have the same laptop and the same problem with LMDE 64-bit. So I guess it's very probable that it's faulty. Have you tried just redoing the USB stick with Unetbootin, or else trying with a different stick? Because I have correctly installed Ubuntu before. – user81296 Aug 4 '12 at 16:19
up vote 1 down vote accepted

More a workaround than a solution, but since I couldn't solve the problem with the USB stick, I was finally able to boot from a CD, that's how I installed Ubuntu on my Laptop.

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protected by Community Oct 24 '12 at 10:45

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