System crash is a very common problem with modern computers. Even the most reliable and stable operating system, i.e. Mac OS X may crash at some point of time and you need to improperly reboot your system. When you restart your system after a crash, the desktop appears to be empty. All your data files on desktop are missing. In some cases, your system may not even boot after a crash and you can not access significant data from Mac hard drive. This behavior results in severe data loss and requires Mac Data Recovery to be sorted out, if there is no backup in place.
The Mac OS X system crash can be the outcome of operating system problems, hardware problems, virus infection, operating system-software conflicts, virus infection, hardware issues, and more. Occasional system crashing is usual and normally can be fixed easily by rebooting your system. You can try out the below instructions to recover your system from a system crash:
Turn your Mac machine off by holding the Power button for a few seconds...