Q&A for How to Update Windows

Something may be overheating. Take a spray duster and gently remove all dust and buildup from the interior and any vents. Ensure all fans are working (CPU, video card, power supply, case exhaust fans, etc.), and replace any that aren't.

You can download updates from Microsoft that you can move to another computer to update it offline.

Windows 7 SP1 is the latest version. Windows Update in Windows 7 only has updates up to January 2020, which is Windows 7 EoL date (or January 2023, when paid update support ends).

Make sure your computer is connected to the internet, as this will allow it to search for and download the most up-to-date updates possible. If it's already connected to the internet, it's possible you're already up-to-date, and you don't need any further updates. Windows does sometimes install updates automatically, depending on your settings, so this could be the reason for no updates being found.

The command Ctrl+Alt+Del is only intended to reboot your machine (reload the operating system with your current settings). To reset your computer to original settings you will need to perform a 'factory reset' which will re-format your hard drive and re-install the operating system on your machine. This action is usually available from your main Windows 'Settings' menu, although it might be named differently depending on your version of Windows ('Factory Rest', 'System Reset', 'Restore Windows', and even 'Recover Windows from Disk' etc.) Your best best it to search your Windows Settings menu or Windows Help menu for 'factory reset' and get instructions from there.

You might have to click Check for updates. Wait as the Windows Update tool scans for updates that you have not installed.

Try resetting it, as that can help.