You need that power cord and attach as it *SHOULD* have been during the restore/recovery that is pointed out in the instructions in the manual or DOCs.
If you have that power cord, then retry using the same methods to restart the process, if you have done this and it fails even to start then its corrupted. You now need the actual discs and some ext. USB CD/DVD drive to attach to netbook to access restore/recovery data. You can contact eMachine support and ask for such. However, if you have access to a retail OS version, that too will do the job. You only need to further install the drivers, etc. that maybe needed to finish the task. You could also use a flash drive that has been prepared, but when it comes to OS installs, that tends to be tricky and not an item most users want to tackle. You can also buy from 3rd party restore/recovery sources, just buy from a trusted vendor.
I have a em250 with windows 7. emachine em250 model KAV60. I was putting it back to factory settings and the power cord was not on and the computer shut down in the middle of the reset. I am now getting a screen with Windows Boot Manager code 0xc000000F on it. I have no recovery disk and I don't have a cd rom on this little netbook. need help.