When your computer won’t boot past the title screen or start-up screen, it usually means you have software problems or a virus. Almost all Acer computers come preinstalled with a Windows operating system, which allows you to troubleshoot the operating system before locking up during the start-up screen. Whether your problem is hardware or software-related, this technique allows you to access your desktop to retrieve all the items you want from your hard drive before completely reinstalling your operating system.