The blue screen caused by watchdog.sys is mainly caused by a problem with your graphics card driver. If you don't want to reinstall the system, try to start F8 to enter safe mode and uninstall incompatible hardware device drivers. That is->; Open the device manager-> Right-click each device separately->; Attribute-> Drive-> Digital signature program->; There is no driver for Microsoft Windows Hardware Compatibility Publisher in >; This is a driver that is not digitally signed by Microsoft. If there is such a driver in the system, it will love all kinds of problems. ) After automatically identifying the hardware device, reinstall the driver (WHQL) that you downloaded and has passed the Microsoft digital signature authentication, and then restart the computer again to see if there is any improvement ... ★ Friendly reminder: the driver can be used. The newer the better. Sometimes just the latest version of the public version or beta version of the driver will lead to blue screen. So don't blindly pursue the new version. Otherwise, after installing incompatible drivers, the system will run unsteadily, and even blue screen of death phenomenon will appear. ☆ If there is no blue screen phenomenon before installing the latest driver, I suggest you uninstall the current driver, restart the computer, and then restore the stable version of the driver before installing ... ★ I suggest you use the driver of your specific hardware manufacturer. 0x0000008E (equivalent to the new blue screen representation code BC BCCode: 1000008E). Microsoft explained that there may be many reasons for this error, and it is generally more troublesome to encounter this error. The main possibilities are as follows: 1. Hard disk damage 2. Hardware configuration problem 3. Incompatible software. Incompatible driver 5. Viruses in operating system 6. The memory module is mismatched or damaged.