I need to restore my macbook pro with os sierra but have no disk to do so

Go to closest Apple Retailer fixer. A tech maybe able to flash recover your systems data. Being backed up will help. This may not be as painful as it looks. Make the call.

Reboot and tap f8 to see if a system recovery command pops up. Follow the screen instructions.

Your call service for the Mac should also b able to talk you through the process. Then remotely have troubleshooting accomplished while you watch and converse on the telephone.

Macs that are compatible with macOS Sierra:

• iMac (Late 2009 and later)
• Mac mini (2010 and later)
• Mac Pro (2010 and later)
• MacBook (Late 2009 and later)
• MacBook Air (2010 and later)
• MacBook Pro (2010 and later)

There is no 'Factory Reset' button as such. If you are running OS 10.7 to 10.10, then you need to start up from the 'recovery' partition (CMD+R) on startup. You will then be able to erase the hard drive using 'Disk Utility' and then re-install the OS.

1. insert the DVD given with mac book pro
2. restart
3. before rebooting (restart musical cord) press alt (option) key, when the display appears
4. now you have to select which source disk you wish to start
5. must select the DVD you were insert

If you held the 'option' key during power up and then selected the recovery icon, you will have come up to the utilities screen. From that screen you can choose 'Reinstall OS X', but you need to be connected to the internet to do this.
If you connect via WiFi, then in the top right corner there should be a WiFi symbol, clicking on it will allow you to connect to a WiFi network.

Thank you for contacting Fixya Support, I am glad to assist.

If you are unable to gain access via the password to login to your Mac OS X desktop, you are going to reset your password.

What you will need to do is use the Mac OS X restore (Disk 1) or the Mac OS X installation disk which came with your Macbook Pro.

Now perform this process:

* Insert your install disc
* Reboot your Macbook Pro

* Press the C key on your keyboard and hold until you see the white screen, grey apple, and eventually the spinning gear.

* Release the C key when you see the spinning gear

* When you reach the Mac OS X install environment, click past the language screen.

* From the Installer Menu bar select "Utilities" and then "Reset Password".

* Within the Reset Password utility, select the User Account you need access to.

* Reset the password.

* Quit the Reset Password utility when you have reset and confirmed the new password

* Quit the Installer and restart your Mac..

* At the log in window, enter your username and newly reset password. You should now be able to successfully log in. * I hope this helps.

Regards,

-Mactechtrainer

Mac OS Password
This is your solution.

you can purchase the windows xp os disk from any supported retailer, use the disk to reconfigure your hard drive and system, im not sure how well this will work, considering apple only makes mac os. you can try it, but im not sure how your macBook will respond, good luck

Most likely, you are looking at a corrupt installation of the OS, or a failing hard drive... most likely the latter, unfortunately. Laptop hard drives only seem to last a couple years now, 3-4 if you're really lucky. I would suggest popping in the System Restore Disc (that came with the computer originally) or the OS install disc (in case it has a new version installed than it came with originally) and go to Tools->Disk Utility, and tell it to "repair permissions" and "repair disk", and see if that resolves it. If it happens to, I suggest backing up your data ASAP just in case. More info can be found here on using Disk Utility.

You sure you got the original gray label install discs for this computer? Sometimes people stick gray discs in with the computers and they are not specific for that model.  The Macbook Pro ships with Tiger 10.4.6
Borrow a black label Tiger retail disc from someone and install your OS that way.