I've found annoying problem with my UEFI/ BIOS, caused by myself thou. 

Long time ago i had to put a password on my bios to protect it from others just in case. It was only temporary need, just like password, I've forgotten it, and now after few years i need to use my bios and i can't access to it. I've tried all my old passwords without success.

1) I've put off the CMOS battery to reset it for 4 hours at least, but it didn't help me at all. It reset my bios, indeed but password is still on. 

2) I've tried also to use jumpers to clear CMOS, but thing's the same as above. 

3) Updating UEFI/ BIOS also won't help me, because i need a password to do it as well. 

I've checked many other ways to clear/ recover my old password but none help me. I bought my PC few years ago with motherboard of course, but as you might suppose all boxes manuals and everything are gone. Prolly thrashed during all those years. 

So here's my question: is there any other way to reset/ recover my password to get access to bootloader settings? I'd like to install new Windows but i'm unable to do so without BIOS. 

EDIT: Motherboard is H61M-HVS :)

Clearing CMOS via the jumpers should also clear passwords so if that didn't work then you may not have bridged the pins correctly. The battery method should clear any and all saved data in the bios including date and time.

No password should remain after a proper CMOS clear as the only information that is permanently written to the BIOS ROM is the BIOS itself. In order to add information it needs to be completely re flashed and no BIOS does this for passwords.

Good luck and let us know what happens. If for some unknown reason your password does not reset (which is supposed to be impossible) then you can contact Asrock tech support and request they send you a new BIOS chip which you can swap out for your current one.

I did everything what you said. Well i did it again, and again unseccessful. 

Seems like my motherboard got some kinda inner magic power and memory, if it runs without battery and still remember passwords even after reset. 

First time my own PC have beat me. 

CLRCMOS1 allows you to clear the data in CMOS. To clear and reset the system parameters to default setup, please turn off the computer and unplug the power cord from the power supply. After waiting for 15 seconds, use a jumper cap to short pin2 and pin3 on CLRCMOS1 for 5 seconds. However, please do not clear the CMOS right after you update the BIOS. If you need to clear the CMOS when you just inish updating the BIOS, you must boot up the system irst, and then shut it down before you do the clear-CMOS action. Please be noted that the password, date, time, user default proile, 1394 GUID and MAC address will be cleared only if the CMOS battery is removed.

Maybe try unplugging the PC from all peripherals and power, disconnect HDDs and other components from the board (not CPU or RAM), remove the battery then hit the power button for 15 seconds. Once you have done this leave the battery out with the system dismantled over night. If that does not clear the password nothing will. You can also try and boot into the bios with the HDDs disconnected. 

If this doesn't work ask ASrock for a new BIOS chip, if they can't I'm sure they will allow RMA.

I wish you luck.

I did everything what you said, unplugging everything and left the battery outside over the night. That worked, thanks so much to you guys :)