Recently I had faced one problem: after switching on computer, I used to find a blue screen showing "Intel inside" instead of the screen asking for boot option to Windows or Linux. After some time, the screen used to go away and on a black screen, I used to see instruction to reboot the computer. After rebooting, the same problem used to be repeated. This problem was fixed by changing the cable connection to the hard disk and the power connection (from SMPS) to it. This happened again today. Do you think hard disk of my computer going to crash in near future?
Second: How can I prevent hard disk from crash? Can lack of defragmentation lead to hard disk crash?