What happens when you turn on a new PC

When you power on a new computer, Windows does not start when ready. Instead, the machine runs a setup process called Windows Setup that takes 15 to 45 minutes, depending on your internet speed and the Windows version. During this time, Windows installs itself onto your hard drive, asks you to create or sign in with a user account, and configures basic settings like language, time zone, and network connection.

You cannot skip this process — Windows will not let you use the computer until Setup completes. The good news is that Setup walks you through each step with on-screen prompts, and you do not need technical knowledge to finish it. Most people get stuck only when they do not have their Microsoft account password handy or when their internet connection drops partway through.

Key Takeaways

  • Windows Setup runs automatically the first time you turn on a new PC and requires you to connect to the internet, create a user account, and choose basic settings before the desktop appears.
  • You will need either a Microsoft account (email and password) or the option to create a local account that works only on that computer.
  • Keep your internet connection stable during Setup — if it drops, Windows will pause and resume when connection returns, but a complete power loss will force you to start over.
  • After Setup finishes, Windows will read and install updates in the background, which can take several hours; your computer may restart without warning during this time.
  • The first restart after Setup is normal and expected — do not turn off the computer if it restarts on its own.

Connecting to the internet before Setup begins

Windows Setup requires an internet connection to read drivers (software that lets Windows talk to your hardware), security updates, and other essential files. If your new PC has an Ethernet port and a cable nearby, plug it in before you power on — this is the most reliable option because the connection is automatic and does not drop.

If you are using Wi-Fi, wait until Setup prompts you to choose a network. You will see a list of available Wi-Fi networks on the screen, and you can select yours and enter the password. Do this step as soon as Setup asks, because some Setup screens will not appear until Windows confirms it can reach the internet.

If you do not have internet access at the moment you turn on the PC, Setup will pause and ask you to connect. You can leave the computer at this screen, go set up your Wi-Fi or Ethernet, and come back — Setup will resume automatically once it detects a connection.

Creating your user account during Setup

Partway through Setup, Windows will ask you to sign in or create an account. You have two choices: use a Microsoft account (an email address and password that Microsoft recognizes) or create a local account (a username and password that works only on this computer).

A Microsoft account is the standard choice because it lets you read apps from the Microsoft Store, sync your settings across devices if you own multiple PCs, and recover your account if you forget your password. If you already have a Hotmail, Outlook, or Gmail account linked to Microsoft, you can use that email and password here. If not, Setup will let you create a new Microsoft account during this step.

A local account is simpler if you do not plan to use the Microsoft Store or sync settings, but it offers fewer recovery options if you forget your password. Most people choose the Microsoft account route because it takes the same amount of time and gives you more flexibility later.

Write down the password you choose — you will need it if you ever lock your screen or restart the computer. If you forget it, recovering a local account is difficult, and recovering a Microsoft account requires access to your backup email address.

Choosing your privacy and security settings

After you create your account, Setup presents a screen with several toggles for privacy and security features. These include whether Windows can collect diagnostic data, whether Cortana (Windows voice assistant) is active, and whether certain advertising features are on. You do not need to understand every option — the defaults are reasonable for most people.

If you want to reduce data collection, turn off "Diagnostic data" and "Tailored experiences" — these settings do not break anything, they just mean Windows sends less information back to Microsoft about how you use your computer. The "Activity history" toggle controls whether Windows remembers which files and apps you opened; turning it off does not hurt, but it also does not save much space.

You can change any of these settings later by opening Settings (search for "Settings" in the taskbar) and navigating to Privacy & Security. Setup is not your final note to adjust them.

What to do while Windows downloads updates

After Setup finishes and you see the desktop for the first time, Windows when ready begins downloading and installing updates in the background. This process can take 30 minutes to several hours, depending on how many updates are available and your internet speed. You will see a notification in the bottom right corner that says "Updates available" or "Installing updates".

You can use your computer normally while updates install — open apps, browse the web, or check email. However, Windows may restart without warning to finish installing updates. If a restart is coming, Windows will show a notification asking you to save your work. Always save and close what you are doing when you see this message, because the restart will happen whether or not you are ready.

Do not turn off the computer during updates. If the power cuts out or you force a shutdown while Windows is installing updates, the installation can fail and leave your system in an unstable state. If an update restart happens while you are away, that is normal — your computer will restart, finish the update, and return to the login screen.

Troubleshooting if Setup gets stuck or fails

If Setup stops responding or displays an error message, the most common cause is an unstable internet connection. Check that your Ethernet cable is plugged in or that your Wi-Fi is still connected. If the connection is fine, wait 10 minutes — Setup sometimes pauses while downloading large files and resumes on its own.

If Setup fails completely and you see an error code, write down the code and restart the computer by holding the power button for 10 seconds until it shuts down, then press the power button again to turn it back on. Setup will usually resume from where it left off. If the same error appears twice, the hard drive may have a problem, and you should contact the computer manufacturer or a local repair shop.

If you accidentally chose the wrong language or time zone during Setup, do not restart — finish Setup first. After you reach the desktop, open Settings, go to Time & Language, and change both settings. Restarting in the middle of Setup to fix a small mistake will only delay the process.

After Setup is complete and your desktop is ready

Once Setup finishes and you see the desktop, your PC is technically ready to use. However, Windows will still be downloading and installing updates in the background for the next few hours. Let your computer run during this time — do not put it to sleep or shut it down until the update notification disappears.

Your next steps depend on what you plan to do with the computer. If you use Microsoft Office, Adobe Creative Suite, or other paid software, install those programs now. If you mainly use web apps like Gmail or Google Docs, you can start using your browser when ready. Windows comes with some built-in apps like Notepad, Calculator, and File Explorer, so you can begin working right away if you want.

Before you store sensitive files or financial information on the new PC, take 10 minutes to check that Windows Defender (the built-in antivirus) is active. Search for "Windows Security" in the taskbar, open it, and look at the Virus & threat protection section — it should show a green checkmark next to "Virus & threat protection". If it shows a warning, Windows Defender may have been disabled, and you should turn it back on or contact the manufacturer.

Frequently Asked Questions

Can I use my computer while Windows Setup is running?

No. Setup locks the computer until it finishes. You will see setup screens asking for input, but you cannot access the desktop, open apps, or do anything else. Setup usually takes 15 to 45 minutes depending on your internet speed.

What if I do not have a Microsoft account?

You can create one during Setup at no cost — it takes 2 minutes and requires only an email address and a password you choose. Alternatively, you can select "Create a local account" and use a username and password that works only on that computer, though this limits some features later.

Is it normal for the computer to restart after Setup finishes?

Yes. Windows restarts one or more times after Setup completes while it installs updates. These restarts are automatic and expected. Save your work when you see a restart notification, and do not turn off the computer during this process.

What should I do if Setup asks for a product key?

Most new PCs come with Windows already installed and activated, so Setup should not ask for a product key. If it does, check the documentation that came with your computer — the key may be printed on a sticker on the machine itself or included in the box. If you cannot find it, contact the manufacturer before continuing.

Can I go back and change my account type after Setup finishes?

Yes, but it requires some work. You can convert a local account to a Microsoft account by opening Settings, going to Accounts, and selecting "Sign in with a Microsoft account instead". You will need your Microsoft email and password. Converting the other direction (Microsoft account to local account) is more complicated and usually not necessary.