How can I wake up a computer automatically at a given time?

I need a way to wake up a pc from completely powered off or shutdown state at a given time for windows 7 32bit. I know there is a solution if I have access to bios settings but the problem is it's not my pc, and its owner has set a bios password so that I cannot access bios settings however I have full access to administrator account.
So Is there a way to do this OR Can I remove bios password (Americam Megatrend bios ) without removing cmos battery or short circuiting jumper (I mean I cannot open its case).
Thank you in advance.

Why not ask them for BIOS password? There is a setting that would need to be enabled in BIOS before attempting to find a solution.

Ask the owner to set it to auto start if it's supported by the motherboard.

You should not try to "hack" things that is not yours.

They aren't cheap, but there are IP-enabled power strips available where you can connect remotely to the power strip and individually turn on or off a power plug.

Of course, that won't do you any good if your bios settings don't repower a computer after a power loss, you'd still need to make a bios change.

So like hiker said, get the bios password from the owner. If it were me and they for some reason refused, I'd be done with working on their machine for them.

contact to the owner and tell to enable this option if your motherboard supports it.