Generally speaking, the screen jam or crash is caused by improper operation. Remember not to do anything that may cause a screen jam or crash. Don't operate the computer at full load, that is, when playing games, watching videos, downloading and watching web pages, it is most likely to restart, crash and blue screen when doing other operations, so don't operate other things when playing games, watching videos, downloading and watching web pages. In terms of hardware, if the memory stick is small, add the memory stick. The temperature of CPU and other hardware is too high, and the hard disk is broken, all of which are caused by improper hardware. If it has something to do with hardware, one is that the memory is low, the temperature of hardware such as CPU is high-definition gray, and there is something wrong with the hard disk. On the soft side, uninstall what was downloaded before the accident, download Win cleaning assistant to kill Trojans, restore the system or reinstall it, and don't run at full capacity if there is one. Win78 can basically run 4G memory, XP is 2G memory, and it is best to double it. If it is not this number, it is recommended to add memory (this is a practical number, not a theoretical number).