I screwed up during a reinstallation of Windows 10. Halps? D:?

Well, I formatted my entire Windows partition like the Windows website told me to. Then I tried to install to it, but it said "Windows cannot be installed to this disk. The selected disk has an MBR partition table. On EFI systems, Windows can only be installed to GPT disks."
So I looked up a solution, found one. Delete All partitions, then make a new one. POW! I could install. But, I am worried. Right now I'm going through the normal installation… BUT… I'm scared that I deleted the stuff that my Lenovo laptop needs to work properly, like the BIOS setup utility, the Lenovo hardware drivers and all that shiet. Please give me reassurance. I don't want a screwed up laptop! D:
Added (1). Well, I installed Windows 10. Everything seems fine. Thanks for the help. :D

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