can't access my BIOS after changing Legacy to UEFI ROM

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Brakheart

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I ordered a Crucial MX200 250gb ssd a week ago because my previous ssd (kingston v300 120gb) suddenly stopped working: it got locked out of nowhere, and so I couldn't use it anymore.
I installed Windows 8.1 x64 yesterday when I picked up my new ssd and it all went smoothly. Today, I got into the BIOS and made the HUGE mistake of tweaking around a bit. I changed the Legacy ROM boot option to the UEFI (or EFI, can't recall, there's only two options: legacy, which comes by default, and the other one, to supposedly speed up a bit the startup time and overall performance.
I restarted the Pc in order for the changes to take effect and now I can't even move pass the Asus BIOS loadscreen (the very first thing that appears when you turn on the PC, POST I think it's called). I tried pressing DEL key in order to get into the BIOS and change it back to where it was, but I can't even do that. It just doesn't work. I tried ALL other keyboard keys and nothing. My keyboard is working perfectly btw, it's not the keyboard's problem. I also tried plugging in my usb with Windows to see if I could at least reinstall the OS or something, but I can't since the Computer won't move pass the bios loadscreen.
I want to attach a picture of how the screen looks when I first turn on the Computer, but seems I can't do that on my cellphone. Basically it looks like a perfect square in the middle of the screen, like it got "shrinked" from fullscreen to a square (like when you change the resolution of a game from its default one) as it was before my changes. i tried searching in this website and many others for the same problem but no solution was possible, nor there was someone with my exact same problem (at least that I could find).
Any help would be deeply appreciated, since I just got this ssd and I really need my computer to work.
MY RIG:
MOBO: ASUS P8Z68-v LE
SSD: Crucial MX200 250gb
RAM: Corsair Vengeance 1333MHz 3x4gb
CPU: Intel I5 2500k
 
Solution
The 'CLRTC' jumper is the one you want, you don't need to remove the battery, just move the jumper over to the middle and right prongs for 3 seconds then move it back to the original place, you should be good to go after that.

If that doesn't work you might have to pull the battery and then move the jumper, this will completely reset the bios including time and date.

You will still need to disconnect from main power to do either option.

Brakheart

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Oct 29, 2015
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I'll try looking for the jumper thing on my mobo and removing the battery, although I searched for it yesterday and the only similar thing is something called "CLRTC", that doesn't have any kind of switch or whatever to turn on and off.
EDIT: nvm, just found out searching infoabout my mobo I have to unplug the clrtc thing and plug it onto the other two pins that are right next to it. Will keep updating the post as I make the changes (I'm in class right now so I can't do it right away).
 

ShadyHamster

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The 'CLRTC' jumper is the one you want, you don't need to remove the battery, just move the jumper over to the middle and right prongs for 3 seconds then move it back to the original place, you should be good to go after that.

If that doesn't work you might have to pull the battery and then move the jumper, this will completely reset the bios including time and date.

You will still need to disconnect from main power to do either option.
 
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Brakheart

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Oct 29, 2015
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Thank you very much for your help! I did the CLRTC thing and it worked perfectly :D!!!!! Really, thank you.
 
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