There are times in which we use a good smooth computer in working condition but we are unable to access some files. We might get a computer freeze or the system gets indefinitely hung. You might take a while to judge between virus attacks or hard drive failures. Once you have diagnosed it to be hard drive issue you run to the nearest hard drive recovery shop to get your hard disk checked.  

The recovery specialist will fix the drive for you and demand a huge some. Well do you ever check what had actually happened? Here are 5 causes that lead to read/write errors on your hard disk.

1. Manufacturing defects leading to Head crash
90% of the head crashes are caused by manufacturing defects and pre-mature wearing. There were some hard drives of IBM and Seagate which got worn out quickly causing the head to crash while within the warranty period. The company had to pay huge losses to replace all the drives but the customer’s data was lost how so ever. The biggest problem with a head crash is that it’s not easy to recover with a file recovery software like other failures.

2. Rough and Improper use 
When you are buying a new hard drive it always comes in a shock proof packing. This is because the inner components are fragile and becomes even more fragile when they are assembled together into a hard disk. Laptops have mechanisms to shock-proof the hard disk on the mother board to an extend but this system fails when you subject the laptop to frequent and heavy mishandles. When you rough use your computer or accidently drop your laptop down, slight mal-adjustments occur on the hard disk which might not be evident at all at that point. But in due course of time these mal-adjustments accumulate and aggravate leading to complete disk failure. 

3. Excessive heat inside the hard drive
This type of crash occurs more frequently in the tropical regions of the earth where the prevailing temperature is mostly above 30 degree Celsius. High temperature working conditions cause the hard drive to crash faster than normal since the disk works by rotation and rotation itself generates heat. To increase the disk speed companies have started increasing the disk RPM which will eventually lead to generation of more heat and ultimately crash and data loss. If your hard drives are working in a NAS box or a RAID array your problems are even worse. It’s always advised to get some monitoring utility to check your disk temperature and keep in mind that anything above 45 degree Celsius is a critical state, though the hard disk company have mentioned higher temperature compatibility. 

4. Sudden Power Surge and Power outages
Around reason for hard disk failure surround power problems. When the disk is running the disk head will be parked on the disk platter with a cushion of air separating the head from the platter surface. When you power down your system manually it sends signals to the hard drive control board to unpark from the platter disk and spin down slowly. But if it’s a sudden power loss these process don’t have and your disk and head gets lost astray crashing on to the platter surface with the cushion of air instantly disappearing. A sudden outage in electricity or an electrical surge can short your data device control board there by causing the hard disk’s head crash, motor crash or the disk platter to get destructed. Power outage causes less problem compared to power surges