How to Install Windows 8.1 Pro on ASUS N46

I am installing Windows 8.1 Pro onto my ASUS N46JV laptop. At step "Which type of installation do you want?" there are 2 options:

Upgrade: Install Windows and keep files, settings, and application
Custom: Install Windows only (advanced)

I chose option 1 then Compatibility report shows "The computer started using the Windows installation media. Remove the installation media and restart your computer so that Windows start normally. Then, insert the installation media and restart the upgrade. (Do not select ICustom (advanced)I to perform an upgrade. ICustom (advanced)I installs a new copy of Windows and deletes your programs and settings.)

Then I chose option 2, at step "Where do you want to install Windows?" There are 3 choices:

Drive 0 Partition 1: System Reserved
Drive 0 Partition 2
Drive 0 Partition 3

I cannot install on partition 2 and 3, because "Windows cannot be installed to this disk. The selected disk has an MBR partition table. On EFI system, windows can only be installed to GPT disks."

I once installed Windows 8.1 Pro on my laptop ACER Aspire 4736Z without any problems. I need an explanation with these 2 cases, why does this happen and how to solve it?