Blinking underscore before boot

[Lewie_1]

Hi,

Since a few days ago I've had this annoying problem during boot, after the Asus logo I'll get a black screen with a blinking white underscore in the top left of my screen. This didn't happen before which is why it's bothering me.

I've tried resetting cmos/bios, updating bios, reinstalling windows, making sure SSD is the first in the boot priority and everything else I could possibly find online before coming here.

I also tried disconnecting my HDD and just having my SSD connected with no luck still.

The only time it seemed to have stopped was when I removed my GPU and used my integrated GPU instead, which made me think it was the GPU drivers so I uninstalled them and put the GPU back in with no results.

I have attached a video so you can see what I mean, if you need more details just ask.

My Specs:

CPU: i5-6600k
MOBO: ASUS z170-A
GPU: GTX 1070
RAM: 16GB Hyper X Fury 2400
SSD(OS DRIVE): 850 EVO 250GB
1TB HDD

OS: Windows 10 Pro 64 bit

VIDEO: https://youtu.be/64UtusCShKk

Thanks!

 

[getochkn]

First, all the bios stuff happens before windows, so it wouldn't be a driver thing.

It's the way most PC's boot. Could have always been there and you just notice it. It's just the boot order.

 

[SkyNetRising]

Blinking underscore for 1.5 seconds bothers you so much, that you reinstalled windows? OCD much?
That underscore shows during time discrete graphics card is being detected and initialized.
It's completely normal. And stop obsessing over it.