i recently bought a dell inspiron 15 7357 used from a pawnshop and it had a bios password that they stated they did not have the bios password to ..i contacted dell and went through the process of transferring the ownership that went great called about the problem and was given a code from a tech that didnt work and she stated she never heard of the problem really ..and went straight to you need to replace the motherboard for 300 dollars ..so im asking for help because it has to be another way to get to find the password please help thank you
Let's get serious! You must remove the battery and AC adapter. Take the laptop apart until you can find the CMOS battery (button cell). Make note which side of the battery is up, and remove the battery. If there is a pswd jumper, remove the jumper cap, Wait about 1/2 hour in any event.
Replace the CMOS battery correctly. If you removed the pswd jumper cap, leave it off for now. Reassemble the machine as much as is required to power it up, enter the bios setup program (F2 on boot up). Reset the CMOS password if desired. Otherwise, leave it blank. Exit the BIOS setup.
If you opened the pswd jumper, power off the machine and replace the jumper cap. Reassemble the machine. You're done!
Bad advice - and not worth the effort. There are no password jumpers on Dell notebooks, nor is the password stored in volatile CMOS memory.
Further, discussions of bypassing Dell's system security are not permitted in these forums.