Can not acces the Bios.

[yourzone]

So i can't access my BIOS because its look like my keyboard doesnt working until windows start.
But then when i put a usb key before booting (with a .iso file like window or ubuntu installer) my keyboard just magically works before going into windows and i can access my BIOS.

Anyone got a solution to this stupid problem?

Thanks in advance


(EDIT):
PC specs:
CPU: i7 4790K
Motherboard: Asus z97-A/USB3.1 (no usb 2.0 ports)
Rams: G.skill Ripjaws X Series 16GB 2x8GB
Graphic card: EVGA GeForce GTX 1080 FTW gaming

The keyboard is not really new like 4 or 6 months old.

Now that i think about i was never able to go in the BIOS even with my old keyboard.

 

[panathas]

Please post your complete system specs and give us more info. Is this a new system? Is this an old or new keyboard? Was it working fine before?

Try plugging your USB keyboard in all available USB ports, preferably use the USB 2.0 ports and not USB 3. You could also search all the available USB setting inside the BIOS and enable a USB compatibility setting. While you are there try to configure 1 or 2 USB ports to work only as USB 2.0, if your board doesn't have dedicated USB 2.0 ports. Finally if your keyboard was working fine before, a CMOS reset may help and it's worth a try.

 

[yourzone]

Please post your complete system specs and give us more info. Is this a new system? Is this an old or new keyboard? Was it working fine before?

Try plugging your USB keyboard in all available USB ports, preferably use the USB 2.0 ports and not USB 3. You could also search all the available USB setting inside the BIOS and enable a USB compatibility setting. While you are there try to configure 1 or 2 USB ports to work only as USB 2.0, if your board doesn't have dedicated USB 2.0 ports. Finally if your keyboard was working fine before, a CMOS reset may help and it's worth a try.

Could it be a driver problem? like after a driver update the keyboards NEEDS the driver to work.
My keyboard is a Steelseries Apex M500 Cherry MX Red.

 

[panathas]

Not it's not a driver problem. Sometimes USB keyboards have issues working during boot thus you can't access the BIOS. Lately those issues are more common because motherboards have stopped using USB 2.0 ports which appear to have greater compatibility with older USB 2.0 keyboards. Newer USB 3.0 keyboards don't have these issues.

Since you don't have a USB 2.0 port on your board:

1) You should try testing your keyboard in each available USB port.
2) Also your board should have USB 2.0 pins that could be used for the case's front I/O panel. So if you case does have a front USB 2.0 ports, try plugging your keyboard there. If it's not convenient, you don't have to keep it there all the time, just the times you want to access the BIOS.
3) Try updating the BIOS to the latest version you can find on the ASUS site. New BIOS updates usually improve the board's compatibility with various peripherals/components.
4) Find a way to get into the BIOS and search the various USB settings for compatibility or keyboard options and try to make 2 specific USB ports to work only on USB 2.0 mode.
5) Finally some mechanical/gaming keyboards have BIOS compatibility switches/settings. Search your keyboard's manual for more info.