You have downloaded the compiled version of LO designed to run under x86-64, which is possibly why you are getting an error message. According to Q60310 it is possible to load LO on an intel Atom processor, but you may need the x86 (32-bit) MSI file to do so.
If your version of Atom is x86-64 compatible, that would suggest that LO does not have a version supported by your computer’s architecture. However, be very certain first that your OS is indeed 64-bit, as the current info on Atom 64-bit chipsets is that many so-called 64-bit Atom motherboards cannot actually support 64-bit drivers.
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