Stuck in Setup is preparing your computer for first use

Hello everyone, I know there is a lot of request looking for help for stuck in "Setup is preparing your computer for first use", but I think some people may have had different problems to get this situation. So this is what happen to me, I was restoring my computer to factory settings, all went well until there was a blackout, the light came back and I turned my pc ON and I get stuck in "Setup is preparing..." When I start my pc a black screen comes out saying this...

Windows Error Recovery

Windows failed to start. A recent hardware or software change might be the cause. To fix the problem:
1. Insert your windows installation disc and restore you computer.
2. Choose your language settings, and then click "Next."
3. Click "Repair your computer."

Other options:
If power was interrupted during startup, choose Start Windows Normally.

Safe Mode
Safe Mode with Networking
Safe Mode with Command Prompt
Last know Good Configuration (advanced)
Start Windows Normally

I don't have the windows installation disc so I tried the Other options, I clicked each options and nothing I still stuck in "Setup is preparing your computer for first use" then it restart by itself and it do that again and again no end. I had to disconnect the cable. Please can some tells me what can I do. Please

If you cannot start Recovery over from the hotkey or disks, then do a Clean Reinstall Windows 7.

It discusses how to obtain Installation Media in Step 1.

For eMachines you would delete all partitions during the booted install.

In other words you are telling me that my Windows 7 was deleted.
I have to do all that it tells me from the link you sent me, as soon I get this solved I'll let you know.

Thank you so much for your help.

I'm back again. I bought a DVD and I downloaded the windows 7 installation, and I did the first part to insert the disc but nothing happen. I don't what I'm doing wrong also you told me that for eMachines I've to delete all partitions during the booted install? I'm sorry if I have been annoying.

You are no problem at all. We will stick with you until you have a perfect install if you will see to it that you follow all the steps in Clean Reinstall Windows 7

Where did you get the ISO file and how is it burned to the DVD? Refer to Step 1 in Clean Reinstall Windows 7.

You must boot the disk by restarting the PC, tapping the key for Boot Menu which on eMachines is F10, then choosing the DVD drive to boot the disk, Press Any key when prompted.

Follow the blue link tutorial exactly and you'll have a perfect install.