Summary: This article tells you what black screen of death/BSOD is, why it happened, as well as how to diagnose BSOD. And some quick fixes to help you solve this problem are also listed.
What is Black Screen of Death/BSOD?
Black screen of death, BSOD for short, is an error screen which shows up when a system failure, a software problem, or a hardware fault occurs. BSOD can happen to several operating systems, including Windows and macOS. However, Windows black screen is one of the most-frequently discussed one thanks to its total amount of users over the world.
Plus, one typical symptom is that the computer screen turns black all of a sudden, but note that not all black screens can be diagnosed as BSOD.
Symptoms of Black Screen of Death and How to Diagnose it
Basically, there are 3 types of BSOD symptoms.
1. The monitor screen turns black completely when you are using the computer as usual, or the screen keeps to be completely black starting from the booting of your computer.
2. The monitor screen is all black except for a single movable mouse pointer. You can only move the mouse pointer other than doing anything else. There's no other Windows or macOS features.
3. The monitor screen is all black apart from a flashing gray cursor. This interface is somehow a little bit similar to that of the Command Prompt or the PowerShell in Windows. However, you cannot type in any letters or digits.
In all the above 3 types of situations, you get no response from the operating system and cannot conduct any further operation. Your machine is like "dead".
PC/Laptop/Mac gets a black screen all of a sudden when you are editing your documents, or playing favorite computer games, or browsing websites? Then, you may be caught in a BSOD issue.
What Causes Black Screen of Death?
Before we discuss the real causes of BSOD, be noted again that not all black screens can be diagnosed as BSOD. In some other cases, your screen also remains completely black, and this may be an issue with your monitor, NOT a real BSOD issue. For example, you might have accidentally set your monitor an extremely low brightness in its setting options (figure 4), or your monitor has been broken, or something is wrong with the cable, or you simply haven't turned it on. We'll discuss how to diagnose BSOD and other black screens in part 5.
Two categories of causes can trigger BSOD: hardware problems and logical aspect problems. Below list some detailed common causes of each category.
Computer components are overheating, including CPU's overheating due to the failure of the fan;
The power supply unit (PSU) is not providing enough power to your computer due to PSU aging or incompatible external equipment that has been added to your computer;
Some computer accessories, like graphic card and motherboard, are of poor quality and get corrupted, or are incompatible with the computer.
Logical Aspect Problems
The process of Windows/macOS installation has been interrupted, which led to incomplete Windows or macOS installation;
Software/Application Error. Some incompatible software has been installed and run on your computer;
System file missing or corruption due to virus attack;
The MBR or partition table of internal disk is corrupted.
Will BSOD Cause Serious Consequences?
When people encounter BSOD, one of their big concerns is that whether it will cause serious damage to the operating systems or the disks of their PCs/laptops/Macs, and whether their important data will be lost.
Actually, it depends on the causes of BSOD. As we discussed above, there are two major categories of reasons. One is hardware problem, and another is logical aspect problem.
Generally speaking, hardware problems do not exert too much negative influence on your computer or stored data. However, logical aspect problems, such as virus attack, system corruption, and key file missing, can cause serious consequences to your computer and data. Therefore, remember not to store files in a computer that often gets BSOD, and make timely data backup before disaster happens.
In addition, if such a disaster unfortunately happens, don't panic. You are highly recommended to adopt professional third-party data recovery software, such as iBoysoft Data Recovery (for both Windows and Mac users), to retrieve your lost data at the largest extend in a reliable way.
Quick Fixes of Black Screen of Death
First of all, you need to know how to verify whether your black screen is a BSOD problem or a monitor problem. You can test this by connecting your PC/laptop/Mac with an extra/external monitor which works normally. If the external monitor screen also turns out to be black or blank, then it's very likely to be a BSOD issue.
Compared to any other monitor-displayed errors such as blue screen, black screen of death is usually more difficult to be solved as it doesn't display an error message as a hint or a tip on your screen. But black screen of death is a common issue and there's no need to panic. As an ordinary user, when you are sure that you've been caught in a BSOD issue after a correct diagnosis, you can restart your PC, laptop, or Mac. If the BSOD problem still exists, perform these advanced quick fixes of BSOD for Windows or macOS.
Black Screen of Death is a commonly seen error condition of a computer displayed by several operating systems, often by Windows. When your computer screen goes black, you might think that your computer has gone kaput. However, a black screen is not always equivalent to black screen of death. It may be just specific to the monitor. So, before you decide to buy a new PC, a new laptop, or a new Mac, or send it to the electronics repair shop, make a simple diagnose and perform the quick fixes to save your time and money.
If your important data are unfortunately lost due to BSOD caused by logical aspect issues, you are recommended to use a professional 3rd-party data recovery software, such as iBoysoft Data Recovery, to retrieve your lost data in a reliable way as soon as possible.