Syslinux - Apr 2015 - Arch installation using Syslinux can't boot on the laptop

I described the problem in the Arch forum post:
https://bbs.archlinux.org/viewtopic.php?id=195741

In short, new Arch installation can't boot on the laptop, but boots ok in
the virtual box VM. And this isn't the UEFI problem. The same laptop was
able to boot Ubuntu, Mint, FreeBSD without problems.

Laptop is few years old: Toshiba Satellite L305D-S5895

How can I solve this problem?