Computers always crash

Users questions: Just opened machine to crash, and sometimes to enter to the desktop, sometimes not get into the desktop on the crash, but still less than most of the desktop into the crashed. Have crashed many times for each boot, boot time should be about 20 minutes, two minutes to enter the desktop, do not hang on to normal.
Experts answer: Tips: This state, and Nothing toxic
  • This information provided by the users.Thanks!