Hard Drive Logical Corruption
If your PC gives you the “Blue Screen Of Death” or if your Mac just shows you a grey folder Icon and there are no unusual noises from your hard drive then you may be suffering from what is termed a logical corruption. A logical corruption occurs when one or more of the required system files has become unreadable. This can typically be a consequence of the system not being shut down gracefully or due to a sudden power loss whilst the computer is writing information to these areas.
Hard Disk Drive Bad Sectors
If your hard disk drive has bad sectors then the symptoms to look out for include; a gradual slowing of the system (takes longer to open programs than usual), difficulty in saving/transferring data from one device to another, occasional computer crashes when attempting to complete a task. If you are experiencing any of these symptoms then your hard disk may be suffering from bad sectors and at some point access to your data may be lost. If you are able then make a copy of your critical data to another storage device as soon as possible. Should the worst happen and you loose access to your data before this can be complete then be aware that this is not a fault recoverable by software alone, we implement a hardware based recovery process which allows us to recover most if not all of your precious data.
Hard Drive Electronic Failure
Hard drive electronic failures are usually a consequence of a power surge, use of an incorrect voltage power cable or overheating. The symptoms that accompany a hard drive with an electronic failure include, no noise or attempt from the hard disk to power on, burning smell emanating from the device. If the hard disk does absolutely nothing at all then there is usually a fault with the printed circuit board which means the power is not reaching the required components. If you have a burning smell coming from the hard disk then it is likely that one or more of the protective components have blown. Both of these failures are situations where data is usually fully recoverable but specialist work is required on the printed circuit boards and in some cases a transplant of circuit board is required.
Hard Drive Firmware Failure
Firmware can be thought of as the hard disk Drives own operating system and controls how the hard disk behaves, if your device will not boot or is not recognised by the BIOS, the hard disk drive isn’t making any unusual noises, then it potentially has a firmware fault. A hard disk drive suffering from a firmware fault remains in a busy state. A computer device will only recognise a hard disk drive when it is in a ready state. Recovering data from hard a drive with a firmware failure can be achieved with the necessary remedial equipment, tools and knowledge.
Hard Disk Drive Stiction
The term stiction refers to a condition whereby the read write head ceramic has become welded to the surface of the hard disk platters. This can be caused by the equilibrium of the heads being disturbed and then contacting the platter surface, overheating and literally sticking to platter. A drive suffering from stiction will commonly emit a faint beeping sound caused by the motor failing to rotate when the power is applied at start up. Recovering data from a hard disk suffering from stiction generally means releasing the heads cleaning the debris from the platters and replacing the read write heads. Results are however sometimes inconclusive and further advanced techniques need to be attempted to affect a recovery.
Hard Disk Drive Mechanical Failure
A hard disk drive suffering from a mechanical failure will be either dead due to motor failure or will be making a distinctive clicking or ticking sound. This clicking sound is due to the hard disk drive head actuator moving the assembly to the co-ordinates of the first recording track, the read heads failing to read any control data and then returning sharply to the park position. A number of re-tries generally follow which results in the ticking sound. this failure to read is symptomatic of a hard drive faulty read write head assembly.
The process required to recover data from a failure of this type involves dismantling the hard disk in our clean room environment, extracting the faulty components and replacing them with working donor components. Once these processes are complete we then need to place the device on specialist data recovery hardware in order to generate an image of the faulty device onto a stable drive.