Welcome to the forums, newcomer!
Lenovo have a number of IdeaCenter's in their portfolio. Which one do you have? As for your password issue, we will not assist you in bypassing the password as per our forum rules. You might want to consider reinstalling the OS, if the OS/drive is corrupt. If it's a PSU issue, you might need to replace the unit.
What are the steps of reinstalling the os?Welcome to the forums, newcomer!
Lenovo have a number of IdeaCenter's in their portfolio. Which one do you have? As for your password issue, we will not assist you in bypassing the password as per our forum rules. You might want to consider reinstalling the OS, if the OS/drive is corrupt. If it's a PSU issue, you might need to replace the unit.