If it's new you could always get the store to deal with it. It's also possible, though I'll stress only that it is possible, that it may not be finding a bootable device because the hard drive may be faulty.

@enes, Windows 8/8.1 does not require a machine to support, or have enabled, secure boot. I have a Mac which does not even support it and it boots just fine. Here's some good suggestions:
1. Press f2 or f12 (I think); f2 should open the BIOS itself, and f12 should open the boot manager. However, I'm not exactly sure about that. Note: Do this as soon as you press the power button! Hold it down until you see complete white cover your screen. Go into the boot category, and turn on EFI boot. If its not in that category, move around the bios with the left and right arrow keys until you find it. Left and right
arrow keys move through categories, up and down arrow keys navigate options. Enter edits an on/off value, and f5/f6, or in one of my other computers case, f7/f8 changes values which have multiple values. Set EFI Boot to on. Press f10 and then select yes to save your settings, or go to the 'save and exit' category and select 'save and exit'. Press the up and down arrow keys to find "yes", and press enter. Your computer should reboot automatically. You should be good to go then.
2. Reinstall windows. It may be that your computer has "forgotten" windows, or "crashed" as some people call it. Note: Reinstalling windows is a very difficult process!
3. Send it into the store for reparation.
Note: Do not, under any circumstance, go into the BIOS unless you know absolutely what you are doing. Sited assistance is required. If you go into the BIOS, and do not understand what any of the options do, press control alt delete immediately to exit the BIOS and continue the boot process normally. Editing the BIOS settings without knowledge of what you are doing could have disastrous results, which includes failure to boot properly, your computer beeping at you, indicating in invalid option, blue screens randomly when your not expecting them or at a particular boot stage, failure to recognize a required or necessary device, failure to recognize the RAM/hard drive, etc.
If you do suggestion number one, make sure you have someone close by who actually knows what some of the options do.
A good suggestion when in the bios is: When you don't know what an option does, don't mess with it.

Is the bios accessible to begin with in the first place?

@enes, I did forget that, yes.
@Green Gables Fan: No, the BIOS is not acessible in the terms of usability without sited assistance. The reason is because the computer is unable to load a speech driver at such an early stage. When the computer starts, and the BIOS initializes, it can't initialize the sound card and drivers associated with it because it has no consecutive file system. The file system doesn't just help us computer users, it also helps the computer as well. The BIOS doesn't have one, and its kernel is so small that it can't initialize anything beyond the base system that the windows kernel and all other OSes kernels run off of.
Think of the BIOS as a kind of platform. Now, imagine the platform shrinking to the size of a 32 or 64 byte USB drive. A driver for sound can't be loaded in such small storage copasities. A driver for sound requires at least 128 MB, and if the BIOS were to load a sound driver, it would destroy itself. Plus, after it loaded the sound driver, it has to load a form of a screen reader of some sort, and what screen reader can read computer screens that aren't fully initialized? I've never heard of a computer with a screen reader that runs in 8 bit mode before. Yes, the BIOS runs the processor in 8 bit mode temporarily because that's all it can run it in. The bootloader pulls it into 16 bit mode, and the OS then pulls it into 32 bit mode, and if your using a 64 bit OS, it then jumps to long mode, or 64 bit mode.
I'm not sure how to describe it any further than that.
HTH
Ethin

Here's an alternative example of how and why the BIOS is the way it is.

Imagine you're stranded on an island with nothing but a pen knife. Now you can use the pen knife to cut up some kindling and the like, pull together a few broken branches to build a fire. In time you may be able to use materials to build other tools like using the pen knife to carve an augur and so on, potentially to the point where you may be able to build yourself a log cabin.

When the computer is in the BIOS it only has access to the pen knife and the pen knife just doesn't offer you the right capabilities to make a screen reader, it's just the wrong tool for the job. You can use the BIOS to start an operating system which then can load the right tool for the job, but at that point you're not in the BIOS any more.