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I have a motherboard Intel DP43BF; my son set a BIOS password on my pc, but now he forgot it.
I tried to reset it with the instructions I found on the user manual, so I changed bios jumper from 1-2 position to 2-3, waiting for maintenance menu to appear, but password box only appeared again.
So I tried to clear CMOS by plugging out battery for 15 minutes, but only time was reset and password box always appeared.
I tried last leaving bios jumper into recovery mode (no jumper) but only black screen appears and when I rebooted in normal mode (1-2 jumper) nothing has changed.
Now, what can I do to use my pc?? How can I reset this password?