Question Flashing/Blinking underscore on screen

JacobusTracks

Distinguished
Feb 17, 2014
4
0
18,510
Hello all!

I recently tried to change something in my bios and it went horribly wrong for some reason.

Whenever i now turn on my computer it just immediately after the boot beep shows me a white flashing line on the screen, the screen also seems to be flashing with it (going to completely black when the underscore is disappearing and little less dark when it appears).

I can not get in to the bios or anywhere, and i am not even seeing the motherboard screen which i normally see at startup.

Things i have tried:

Pressing the DEL Key at startup (tried this a thousand times)
Pressing F keys at startup
Leaving only 1 SSD
Removing All HDD's/SSD's
Removing the RAM modules, only leaving 1. (tried multiple slots)
Reseating power cables
Unplugging power chord, and pressing power button for 30 sec.

Resetting the CMOS (took it out for 10 min)
Resetting the CMOS by shorting the pins
(this both leads to the computer booting without beep, then rebooting right away and then same thing happens, no bios)

With everything only a keyboard screen HDMI was plugged in.
Also tried both the HDMI and DVI ports with different screens.
Also tried 2 different keyboards.


If anyone could point me in the right direction that would be amazing.

Thank in advance!


Specs:
GA z87 HD3
i7 4790
DDR3 16gb ram (4gb modules)
SSD Crucial