The computer does not start - ASRock P67 PRO3 error b2 and A3

Hello
I have quite a serious problem because I can not start the computer, at the beginning it looked like it sometimes did not start after a few tries, but as if it did not display this information at the beginning about Prock and Ram and this board where is information on how to run the BIOS, including At the moment, the computer does not start at all, i.e. When I press power, it is as if it is starting: the fans, the diodes on the card and on the network card, light up and on such a small display on the card, different numbers are displayed, followed by the code b2 and then A3 already this A3 does not go out and is on all the time.

Ps. I read that it was something related to SATA and disconnected all cables from these sockets but it did not help and I think that the important thing is that I do not have access to the BIOS.
Equipment
Motherboard: ASRock P67 PRO3
Processor: i5 2500k
Card: GTX 560Ti
Power supply: Thermaltake Smart M550W 80Plus Bronze

Hello.
First, do a Clear CMOS and check the CR2032 battery voltage.
Are you running a PC with a single RAM chip?
greetings

Sorry, but I am not so familiar with these topics and I do not know how to make this Clear CMOS with one chip, I tried and nothing, do you need a device to check the battery voltage?
Ps. Earlier I found this advice to dismantle the computer and put everything back and after this operation I now see that the code 19 is displayed: /

EDIT
Ps. A strange thing, but the code 19 does not show up anymore.

I merged after extracting redundant.
RADU23

SolarBlast wrote:

and I do not know how to do this Clear CMOS with one chip, I tried and nothing, do I need a device to check the battery voltage?

First, there is a "clear CMOS" jumper on the board, you need to consult the board's manual if you cannot locate it. Another is a common multimeter that you need.

I edited removing redundant.
If a colleague has reservations about the spelling, the appropriate button is used for this.
RADU

Ok, yes, the meter does not have xD and what to do with this jumper? Take her out for a while? Because there are three stamens and there is a scroll on 2, or can it be moved to the other side?

SolarBlast wrote:

can it be transferred to the other side?

Transfer to another (with the PC turned off and disconnected from the mains) and after a few seconds return to the original place, then start the PC.

Unfortunately, but it did not help, I will add that the sequence of these codes from launch is: 60, 71, b2, 98, 99, A3
Is it possible that the record has fallen or is it rather some component of the fault?

A3 - IDE Enable. As for the codes, see the link: https://www.asrock.com/support/faq.pl.asp?id=334
Clean the RAM contacts with isopropyl alcohol (do not clean the memory slot!).
Enter the last code for the configuration:
- with all disks and drives disconnected,
- with only the disk connected,
- with only the drive connected,
- with disk and drive connected.
greetings

Whether the disk and drive are connected or not, the sequence of these codes is the same and at the end yen A3 is displayed and it stays that way

https://www.elektroda.pl/rtvforum/topic2560766.html
Read from post # 3 - a similar problem. Maybe the solutions on that topic will be helpful.
greetings

There is no integrated card, the motherboard does not have, and I tried to disconnect everything except the card, prock and ram, because in total I still have a disk and drive (not counting the fans) and even the BIOS does not run.
Possibly, someone would recommend a motherboard model for replacement because it's hard to find the same one somewhere

Anyone have any ideas on how to solve this?