Summary :

What is Asus boot menu key? How to access Asus boot menu? What should you do if the USB is not listed in BIOS as a boot option? How to make Asus boot from USB drive? In this post, MiniTool Partition Wizard will give you answers to these questions.

I recently installed a modbo 5.0 chip with the purpose of being able to play my ps1 backup collection. I have tested the console and it seems the mod chip is active as I get the screen saying 'Loading bootmenu v1.00.' Then the menu presents me with various options as expected. Modbo 5 untuk FLASHDISK masih MASIH ERROR. Loading bios matrix modbo 5 sudah muncul dan di set boot = mass. Pada saat menggunakan flashdisk baru kingstone 16 Gbyte dan format fat32 dan sudah di copy file systemnya ( 10 file system modbo 5 sudah dicoba semua) dan di isi dengan game menggunakan USB util tapi loading MENU V1.00.

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How to Access Asus Boot Menu

What Is Boot Menu

System Boot Menu V1.00 Modbo 500

Boot menu is related to computer boot process. Many people may think that boot menu is the same as the boot order/sequence. The two items are similar but they also have differences. What is boot order/sequence? To explain this item, you should know what the booting process is.

The traditional boot process is as follows:

Once the computer is switched on, start POST (Power On Self Test) process.
The BIOS initializes the necessary system hardware for booting (disk, keyboard controllers etc.).
According to the boot order, BIOS checks the devices (hard disks, removable devices, CD-ROM, etc.) one by one until it finds a bootable drive.
Once it finds a bootable device, it tries to load bootloader and then the bootloader will load the system from partition to boot it.

Then, what's the difference between boot menu and the boot sequence/order/priority? The difference is that boot order is permanent while boot menu is temporary. Once the boot order is fixed, your computer always checks drives in that order and therefore it always boots from the same drive.

If you want to boot from another drive, you should change the boot order to make that drive locate at the first place. But sometimes, changing boot order may be inconvenient, because you should change it again if you want to go back to the previous boot order.

Unlike boot order, if you choose a drive in boot menu, then the computer will boot from that drive just for once. When power down the computer and then switch it on again, the computer will boot in the previous boot order as usual.

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What Is Asus Boot Menu Key

If your computer uses Asus motherboard, you can enter Asus boot menu quickly by pressing a key when powering on your computer. This key is called Asus boot menu key. The Asus boot menu key varies depending on computer models. The following chart shows the Asus boot menu keys corresponding to different computer models:

Models	Boot Menu Key	Bios Key
Desktops	F8	F9
VivoBook f200ca, f202e, q200e, s200e, s400ca, s500ca, u38n, v500ca, v550ca, v551, x200ca, x202e, x550ca, z202e	Esc	Delete
N550JV, N750JV, N550LF, Rog g750jh, Rog g750jw, Rog g750jx Zenbook Infinity ux301, Infinity ux301la, Prime ux31a, Prime ux32vd, R509C, Taichi 21, Touch u500vz, Transformer Book TX300	Esc (Disable 'Fast Boot' and 'Secure Boot Control')	F2
k25f, k35e, k34u, k35u, k43u, k46cb, k52f, k53e, k55a, k60ij, k70ab, k72f, k73e, k73s, k84l, k93sm, k93sv, k95vb, k501, k601, R503C, x32a, x35u, x54c, x61g, x64c, x64v, x75a, x83v, x83vb, x90, x93sv, x95gl, x101ch, x102ba, x200ca, x202e, x301a, x401a, x401u, x501a, x502c, x750ja	F8	Delete
Eee PC 1015, 1025c	Esc	F2
Custom builds	F8	Delete

The above chart also lists Asus BIOS keys corresponding to different computer models. If the Asus boot menu key is not working, you can use the Asus BIOS key to enter BIOS and then open the Asus boot menu.

You may want to know how to check the model of your computer, please refer to the following steps:

Boot into your computer.
In the Windows search box, type 'dxdiag' to open DirectX Diagnostic Tool.
In this window, check the system model

This post shows you how to check laptop model and specs. In this way, you can know what kind of laptop you have.

What to Do If You Can't Access Asus Boot Menu

If you can't access Asus laptop boot menu, you should try Asus BIOS key to see if you can enter BIOS. If the Asus BIOS key also doesn't work, you can try the following ways to fix the problem.

Way 1: Turn Off Fast Startup.

If you can boot into Windows, you can use this method. Please refer to the following steps:

Boot into Windows and then open Control Panel.
Navigate to System and Security> Power Options > Choose what power buttons do.
Click Change settings that are currently unavailable, uncheck Turn on fast startupoption and hit Save changes.

You may be familiar with Windows 10 fast startup, but do you know its pros and cons? This post will show you the pros and cons of Windows 10 fast startup.

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Way 2: Enter WinRE.

Modbo 5 Ps2

If your computer can't boot into Windows, you can use this method. Please refer to the following steps:

Power on and off your computer continuously 3 times to enter Windows Recovery Environment.
Navigate to Troubleshoot > Advanced options > UEFI Firmware Settings.
Click Restart to enter BIOS and change UEFI settings.

Way 3: Use PS/2 Keyboard.

Some users reported that they had fixed this problem by switching to PS/2 keyboard. The USB keyboard may be not recognized by the computer until the OS starts to load. If the above methods fail and you have a PS/2 keyboard, you can try this method.

How to Make Asus Boot from USB

If you have installed multiple systems on your computer, you can use Asus laptop boot menu to choose what system you want to boot. But most people may install just one system on the computer. In this case, the most likely reason they use Asus boot menu is to install system or repair unbootable system.

In this part, I will show you how to make a bootable USB drive and to make Asus boot from USB drive.

1. Boot Asus from USB Installation Media

If you want to reinstall a system on your computer, you can refer to this guide. Please follow the detailed steps below (taking Windows 10 as an example):

Step 1: Connect a USB drive to a normal running computer, and then download Windows 10 Media Creation Tool from Microsoft's official website.

Step 2: Double click this tool to run it. To run this tool, you need to be an administrator. Then, accept applicable notice a