Because a hard drive that I installed would not make my pc boot into windows, I started messing around in bios settings before I searched for the problem in the internet. I have a Chinese motherboard with an i5 3470 installed on it that probably doesn't support uefi. I just tweaked some settings in there and ended up messing with the CSM settings, and from what I believe I changed the "other PCI rom device priority" . It had some options and I checked the "uefi first" setting, and from there it would just not boot anymore and do anything. If I spam the del key while turning on the computer it would say "entering setup..." but it wouldn't enter the setup. After a minute or so it would continue with a black screen with a blinking line in the top right corner. My question is, by resetting the bios, does it reset the CSM settings as well, because I tried removing the cmos battery, I tried shorting the bios with the jumper but nothing happened. What else could I do?