If your Windows system does not start up, there is probably a complication on the computer. This can be either a software error or a problem with the hardware. In the following, we will help you investigate the cause. We'll also show you what to do in each case to get your PC to start up and work properly again.
PC cannot be switched on
If the computer does not respond to the push of the power button , there is very likely a hardware fault with no power supply. In such a case, you need to check the hardware components:
- Is the PC receiving power and is the power supply OK?
- All cables , especially the power cord , are correct?
- Is the PC switched on with the toggle switch on the back?
- Is the problem with the power button , perhaps due to a broken cable?
Blue or black screen
If the screen stays blue or black , check the connection from the computer to the screen. The sounds and lights make it easy to see whether the PC is starting up. If the screen remains black during normal start-up or if it shows a so-called "blue screen", the connection must be checked:
- Is the screen on ?
- Does the screen have power ?
- Are all cables properly seated ?
If the screen is blue but shows something specific like error codes, there is a problem with the Windows software . You can find the solution here.
Windows won't start
If the PC can be switched on but Windows does not start , you have a problem in the BIOS, i.e. your operating system . If Windows 10 starts but has problems, there is a software problem . In both cases it makes sense to have the Windows disc or a boot stick on hand. Here we are going to show you how to create such a Windows boot medium. With this you can repair Windows or set it up from scratch.
Other problems
There are several other problems that can arise when starting a computer. Either way, you should check the software and hardware .
Windows works by itself, but there are problems during or after startup: Then there is a hardware problem . This can also be recognized by the fact that the computer beeps during the incorrect start-up . These tones can be used to determine a code that provides information about the cause of the error. This can be looked up online on the manufacturer's website. For example, here you will find the explanation of the beeps on an Intel mainboard.
Maybe you don't have enough either RAM in your computer so that Windows can start properly. There could also be an actual hardware problem with your hard drive . It may be physically damaged. Here you should connect the hard drive to another computer and back up your data . Then format the hard drive and then have to restart your computer.
Other problems can also occur due to defective or outdated drivers . In such a case, it makes sense to start your Windows PC in Safe Mode. Normally, however, Windows 10 downloads all current drivers by itself .
Another reason for the problems can be a virus attack . This is why you should have an active antivirus program at all times . Windows Defender is enough. If your Windows cannot start because of a virus, you should use an external antivirus program . Desinfec't is useful here. This is included in the c't magazine on a DVD. Alternatively, you can download Desinfec't and put it on a DVD yourself in advance.
Here are some more valuable tips on what to do if Windows is at a loss..