How to bypass login window and login manually?

Please read this whole message before doing anything.

This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.

The purpose of this exercise is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login. Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode* and log in to the account with the problem. The instructions provided by Apple are as follows:

1. Be sure your Mac is shut down.
2. Press the power button.
3. Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone, but not before the tone.
4. Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).

*Note: If FileVault is enabled under Mac OS X 10.7 or later, or if a firmware password is set, you can’t boot in safe mode.

Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.

The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.

Test while in safe mode. Same problem(s)?

After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

Boot from your installation disc (if running Mac OS 10.6.8 or earlier) or into Recovery (if running Mac OS 10.7 or later; command-R at startup), and reinstall the Mac OS. After rebooting, run Software Update. Test. If the problem is gone, you're done.

Note: You need an always-on Ethernet or Wi-Fi connection to the Internet to use Recovery. It won’t work with USB or PPPoE modems, or with networks that require any kind of authentication other than a WPA or WPA2 Personal password.

If the problem persists, boot into Recovery again, launch Disk Utility, and erase the startup volume with the default options. This operation will destroy all data on the volume, so you had be better be sure of your backups. Install the Mac OS again. When you reboot, you'll be prompted to go through the initial setup process. That’s when you import the data from one of your backups. For details of how this works, see here:

Setting-up a new Mac from an old one or its Backups Using Setup Assistant on Snow Leopard or Leopard

Setting-up a new Mac from an old one, its backups, or a PC Using Setup Assistant on Lion

Don't import the Guest account, if it was enabled on the old system. After that, run Software Update again. Test. If the problem is still there, you have a hardware fault. Take the machine to an Apple Store for diagnosis.

If you mean single-user mode, hold down the key combination command-S at the startup chime. If you’re using an external USB keyboard, it must be plugged directly into a built-in port on the Mac, not into a hub. Release the keys when you see a black screen with scrolling white text.

I don't have any suggestions as to what you should do once you're in single-user mode.

Hey if i read this right your just looking at

system pref >users and groups / accounts > login options (bottom right area) > log in automaticall and it will just pass the log in screen where you enter your pw

Click the icon of the user you want to log in as. You must physically depress the trackpad button. Tap-to-click won't work.

I'm not sure I understand your reply, but you should click as you would to select something, yes. You can also use the left and right arrow keys.

What backups do you have?

Does that mean you're sure you can restore your data, no matter what happens? If you answer "yes," I'll assume your data is safe. If that assumption is wrong, you could be headed for disaster.