KowalskiDebug

Didn't see that.

Although you did replace your mainboard battery you may didn't wait long enough (5-10min). Better try to short-circuit your CMOS reset pins using a jumper or maybe a screwdriver (look up your mainboard manual). Before that, make sure you have the power supply turned off and better press the power button once to be sure there is no static current left. Also unplug all unnecessary hardware (use only one RAM stick, no SSD). If you don't have a debug led, a buzzer pin or similar you can only try replacing parts beginning with your mainboard.

In case you actually need to safely erase your SSD (if you are reselling it for example): As @TetraSky mentioned, with SSDs, it's bad to perform a full format (which isn't safe anyway) or overwrite the data, as with HDDs, because it puts a lot of stress on the memory blocks, which shortens the lifespan of the SSD. There is a function for this in most BIOSes. It's simply called "Secure Erase" and uses the ATA-"Secure-Erase" Command, a proprietary routine for securely erasing your SSD by either deleting the decryption key (many SSDs are internally encrypted by default) or applying a voltage spike to all available NAND in unison. If you don't have this option you can also use a tool most manufacturers provide which also uses one of these methods e.g.: Solid State Drive Toolbox Corsair SSD Toolbox SanDisk Secure Erase und Sanitize Samsung Magician Software KIOXIA (Toshiba) SSD Utility Or use one of these tools: Darik's Boot And Nuke (DBAN) Parted-Magic