Problems with installing Linux

[graF]

Hello,

 

I had once installed Linux on my pc. I had a lot of issues with Nvidia drivers, multi-monitor support and then I accidentally f**ked something up and it wouldn't boot anymore, so I uninstalled it. Now, after a couple of months, I've decided to give Linux (GNOME 3 to be specific) another shot, but now everytime I try to boot my USB, grub shows up and I can't seem to get rid of it. I've tried "fixmbr", "chkdsk /f" solutions, but none of them seem so get rid of that damn grub. Any ideas how to fix it?

[AverageHardware]

make a live bootable flashdrive with Linux and uninstall it from there.