Welcome to the Dell Community  @Mamun islam 

There are 2 ways to reset the BIOS!!!

1. Power-on and start tapping the " F2 " key to enter BIOS setup utility.

There you can reset to default settings.

Save and exit.

2. You can disconnect the "Main" battery and the "CMOS/BIOS" coin cell battery.

Connect the AC adapter and let it power-on.

Inspiron 15-3573 Service Manual:

https://www.dell.com/support/manuals/us/en/04/inspiron-15-3573-laptop/inspiron15-3573_sm/before-working-inside-your-computer?guid=guid-5d3b1051-9384-409a-8d5b-9b53bd496de8&lang=en-us

Best regards,

U2

NOTE: This will not remove any BIOS/Power-on password!!!