First, there are too many loaders at startup.

Don't load too many applications at startup (especially if the memory is less than 64MB) to avoid running out of system resources. Under normal circumstances, the system resources should be no less than 90% after Win9X is started. It is best to keep it above 90%. If you don't run any programs after startup, some applications need to be uninstalled below 70%, otherwise a "blue screen" may appear.

Second, there are bugs in the application.

Some applications have defects or errors in design, which may conflict with Win9X or compete for resources at runtime, resulting in Win9X being unable to allocate memory addresses or encountering protective errors. This kind of BUG may be unpredictable, and free software is the most common. In addition, because some users are still using pirated software (including pirated Win9X), these pirated software will destroy and lose part of the source code when decrypting, which makes the software very unstable and unreliable and often leads to "blue screen".

Third, being attacked by unknown programs or viruses.

As long as we encounter this phenomenon when surfing the Internet, we may expose our IP and be attacked by hackers with some software when surfing the Internet, especially when entering some BBS stations. In this case, it is best to install some defense software on your computer. Then log in to BBS to hide the security settings of your IP.

Fourth, version conflict.

Some applications need to call a specific version of the dynamic link library DLL. If the old version of DLL overwrites the new version when installing the software, or the useful DLL file is deleted by mistake when deleting the application, the above call may fail, resulting in a "blue screen". Try reinstalling.

5. There is an error or corruption in the registry.

In many cases, this is the main reason for the "blue screen". The registry stores important data, such as hardware configuration, application settings and user data of Win9X. If the registry is wrong or damaged, a "blue screen" is likely to appear. If your computer often has a "blue screen", you should first consider that there is something wrong with the registry, and you should detect and repair it in time to avoid greater losses.

6. Incompatibility between software and hardware

With the rapid development of new technology and hardware, if new hardware is installed, "blue screen" often appears, which is mostly related to the old BIOS or driver of the motherboard, so that it can not support the hardware well. If your motherboard supports BIOS upgrade, you should upgrade to the latest version or install the latest device driver as soon as possible.