HP has a tool to reset this password when forgotten. You may see some other advice about removing batteries but the new laptops fixed that because it's a security risk.
Presario V3000 bios system disabled 01806
Sir iam using compaq presario v3000 unfortunetly i had cleared bios password & now if i boot the system asking the password for 3 times if i give the old password is not working showing eror message (SYSTEM DISABLED 01806)
please help solving this problem