Question Asus A55A Black Screen Can't Access BIOS

May 15, 2025
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I was trying to resize my main partitions of my HDD (that had windows 10 installed) in my ASUS A55A (https://www.asus.com/ar/supportonly/a55a/helpdesk_knowledge/), but i think i did something wrong, and i messed the partitions and operating system.
That don't bother me much, because i would normally run a usb with windows 10 and do a new installation (data loss is not a problem), but the main problem i'm having now, is that not even the bios menu is appearing when i boot the laptop!
I try connecting a USB with windows 10 installation, a dvd with windows 7 installation and no luck... It only shows a light in the power button, some indicator lights down there and makes some noises, but i can't see the ASUS logo and i can't acces BIOS.

I searched for some solutions, and i saw removing the battery from the motherboard could work, but when i do it, sometimes i can get to see the ASUS logo and enter BIOS, but most of the times it doesn't work either...

My idea is to acces BIOS, then run the USB with windows 10 installation and then open console and clean format the HDD (which i suspect is doing something wrong) to install a new Windows 10 from scratch, but to do this first i need to at least be able to get to the BIOS screen....

Do anybody faced a similar problem and could indicate me why the BIOS menu is not accessible?

PD: I also tried to remove one, the other, or both RAM memories, and sometimes it worked, but most of the times no....
 
Yeah, ive already tried that... I Don't think its screen-related.
As i said, there's been a couple of times that i could get to bios and even to windows installation media, but then when i restart, back again to black screen and unable to enter BIOS or see Asus logo