AlphaTech Data Safe Virus Removal
It's important to keep your computer from malicious infections, even a minor spontaneous crashes could be an indication of an infection especially the ones occurring while internet browsing as it's the main source of most infections and the channel where all the important information is transmitted.
Crashes may occurs when spy-ware or mal-ware is trying to intercept the information transmitted trough internet or ad-ware is trying to inject advertising frames into web-pages or a virus trying to to infect your flash-drive or usb hard-drive. Digital cameras, in most cases, also appears as a flash-drive and can be infected as well.
Of cause, internet usage or usb drive insertion are not the only cases when a crash is triggered by malicious software. If your computer is infected, virus/viruses, spyware, malware or adware may employ self-protection tools called root-kits. The root kits are small, low profile tools specifically designed to hide deep in operating system and trick or disarm many antivirus software and keep certain programs invisible. When they are getting into conflicting situations with antivirus software or incompatible version of windows libraries(dll or sys) they usually trigger crashes of explorer, antivirus software or even the whole operating system.