blinking underscore top left on startup

[Benandlola]

Hello. So recently I've been wanting to overclock my cpu but I wasn't able to get into my bios. Some guy who was trying to help told me to restart my cmos(taking the mothrtboard battery out then placing it back in) and try disabling fast boot. I did both of those but when I did the cmos when I started my pc I got the black scren either a blinking underscore on top left. None of the f keys work and I still can't get into my bios. Any help would be appreciated. Thanks.

 

[COLGeek]

Check that the desired default boot device is setup and saved in your BIOS. This issue is often the result of the incorrect boot device being selected. However, it can also happen as the result of a defective/corrupted boot device as well.

Good luck!

 

[COLGeek]

Please post responses here and not via PM.

The OP sent: "I can't get into my bios I can't get into anything"

Trying resetting your BIOS to default again, like you did earlier. Assuming this lets you into your BIOS, check your boot device settings.

 

[Benandlola]

I've reset it twice and still nothing f keys and the key (del) to get into bios don't work. I've tried unplugging my hard drives and putting my win 10 usb in but still no luck

 

[COLGeek]

It is possible, at this point, that your motherboard is damaged. Try looking through this guide for something you may have missed.

http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems

 

[Benandlola]

Everything is as if should be I checked twice. Is there a way to force the computer to go into the bios without clicking any buttons?

 

[COLGeek]

You can try by disconnecting all boot devices (SSD, HDD, optical drive, USB drives).

 

[Benandlola]

I can get into the beginning of bios when it says load optimized defaults then boot or reboot and also enter bios. I achieved this by disconnecting my keyboard which forces it into that state but when I hit enter on any of the three choices it just freezes and doesn't do anything

 

[COLGeek]

Assuming the motherboard BIOS is in its default setting, it really does sound like your motherboard is the problem at this point and may need to be replaced.

 

[Benandlola]

I did some things and I'm at the point where I can do things in cmd any commands I need to do to fix this?

 

[COLGeek]

What version of Windows are you running?

 

[Benandlola]

holy crap ok i fixed it I dont even know how but i got into command prompt and was able to fix it so yeah. Thanks for the help btw