Windows 8 Boot Up Issue?

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So I recently got a new computer from CyberPowerPC, custom built. I wasn't having problems except for a Windows 8 activation pop-up that would pop up every once in a while. I couldn't find the windows 8 key they supposedly sent to me and I got fed up and downloaded a watermark remover (which was my first mistake). At first I could sign in and it'd sign into a black screen with a cursor. I rebooted it and hit F2 and ever since I changed a few settings it won't even let me sign in.

When I start up the computer it instantly goes to:
>>Checking Media Presence...
>>Media Present...
>>Start PXE over IPv4

then the bottom line changes to
>>Start PXE over IPv6

then it goes to:
Reboot and Select proper Boot device
or Insert Boot Media in selected Boot device and press a key

I tried many different things because the only thing I can do is access the F2 menu but I can't figure out how to boot it up or start it in safe mode (if that'd help enough to uninstall the watermark remover)

My options on top when I hit F2 are Main, Advanced, Security, Boot, and Exit (It doesn't say BIOS on top, like most videos on youtube and fixes on the internet say). The top bar says Aptio Setup Utility

I have a windows 8 disc I got with the laptop but it won't start up (I thought that might be what it meant by Insert Boot Media) but it doesn't do anything.

If anyone has any idea how I can fix this issue any advice or ways of fixing this would help.

Thanks,

John