Sorry guys, and to stephane and scjet.
I did not answer earlier as I am as confounded too. And you are already asking questions that I would have asked. But apologies, nevertheless for not responding earlier.
The few points I like to make but does not really help the OP (er.....Pierleonardo & Mr-Snek)
o I am unsure, as scjet is, if the machine is 64 bit capable - Pierleonardo says he (gender neutral - sigh, but from both 'OP's - their nicks imply male) has installed 64 bits before.
o I am not conversant with usb burns (rufus,...) but both have used "dd bs=4M if=xxxx of=/dev/sdx" and both indicated burns worked to completion. And that should work if machine is 64 bit capable.
o In the case where "GRUB" appears without the menu, it means the grub.cfg is not there in the livecd .
I am tempted to think (like scjet) from this output of fdisk -l
Device Boot Start End Sectors Size Id Type
/dev/sdc1 * 64 3180087 3180024 1.5G cd unknown
/dev/sdc2 3180088 3188279 8192 4M ef EFI (FAT-12/16/32)
That the install media is not made properly. A "dd bs=4M if=xxxxx" should, whatever the prior state or format of the usb , have created a proper install media. A "parted -l" command would be better. But again, scjet had asked to verify that it is done well. Perhaps a new usb device should be proposed? And note the size of that install media? < 1.6 GB ?
In summary, I would not have done better than stephane or scjet and prefer not to add to the noise.
But cheers, everyone.
Oh... good luck.
Or we can try using this to install, if we have an existing linux grub.
Or use the livecd grub to boot the isofile in the hard disk.