How to reformat a laptop without accessing bios

So I forgot the password of my laptop's bios and I need to upgrade it from windows 7 32 bit to 64 bit.
I tried clearing the bios by using Softwares like cmospwd also tried removing cmos battery and there's no jumper on my laptop's board. I also tried using the password generator and it just does not work. I don't know what to do anymore. I have a bootable usb but I can't use it since I can't access the bios. can anyone please help me?
 
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