Ho do i restore system from factory default in cmd

Hi
My computer has crashed, now it wil not start. It keep restarting every time i say start normally. There is an other option wich is " startup repair". If i do that it's does not make anything better. So now i would like to know if i can restore my computer to factory default in cmd. Cause cmd is the only thing i can open when it is finish with the repair.
It would be really nice if i could get an answer as soon as possible cause i am in the middel of my exam.

If Recovery will not run when booting while tapping F key given on the first screen or in your Manual try Marking Recovery Partition Active then rebooting to see if it will run.

Otherwise your options are to order Recovery disks from the OEM TEch Support, or do the superior Clean Reinstall - Factory OEM Windows 7.

Here are also steps for Troubleshooting Windows 7 Failure to Start which try everything possible to disinfect, repair and restart Win7, leading up to if necessary rescuiing your files to run Recovery or do the reinstall.

   Information

We always assume you have made your Recovery Disks using the OEM manufacturer's Recovery Media Creator app the first day you had your new PC.
& made the Startup Repair CD.
startup repair disc-create

Did you make the OEM manufacturer's Recovery Disks?



You can order OEM Recovery disks from your OEM manufacturer's website.
Most OEM's will ship Recovery DVD's for FREE, (may be a postage fee)


Manual how to use Acer eRecovery Management here:
ftp://ftp.support.acer-euro.com/notebook/empowering_technology/NB%20ET2%20user's%20guide/Acer%20eRecovery%20Management%20English.pdf

Have you tried pressing <Alt+F10> at boot up, to goto the Acer eRecovery Management.
Acer Support: Frequently Asked Questions list for How to use Acer eRecovery

Acer Support - Answers, E-Mail, Chat - How do I restore my computer using the eRecovery Management program?

You can Order Acer recovery disks from here:
https://secure.tx.acer.com/RCDB/Main.aspx?brand=acer
or
Acer | Recovery Media
Check in Accessories
or check the main web site.
Acer Worldwide - Select your local country or region

Thanks i solved it. Sorry for using of your time. :)