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Do not run "software" recovery programs in this state. They cause Disk I/O read
/ writes, and
this exerts a lot of stress on the read/write heads, which in turn causes errors to be written
onto
the disk,
further decreasing the chances of data recovery.
Crashed Hard Drive Heads: In the event
of a head crash, the hard drive will most likely make a grinding
or scraping noise. This is very serious and may strip
the magnetic
coating off the platters. This is highly damaging to the drive. Immediately turn the drive off and disconnect it from
your computer.
DO NOT ATTEMPT TO POWER ON THE COMPUTER OR THE HARD DRIVE AS
THIS MAY CAUSE IRREVERSIBLE DAMAGE. At this stage, you need to call the Data Recovery UK technicians on 0333 5 777 120 who will advise you what to do
next.
Hard Disk Drive Motor Failure: A typical hard drive motor usually spins between 4200rpm
and can go up to 15000rpm in high-end end desktop or server hard
drives. The speed is controlled by firmware- information held in the system
area of the hard drive-to enable synchronisation for reading the
data from the
platters.
Hard drive motor can fail in two ways; it neither spins
nor
starts. In this case the motor gets stuck and you can usually feel a slight vibration or hear a humming sound on
the drive when
it powers up. Erratic
speed variations
of the motor may cause the drive to take an extended period of time to come to
the 'Ready'
state. Please note that prolonged or repeatedly powering up the hard drive could
cause further
damage. Turn the computer off or disconnect
the hard drive and call the Data Recovery UK technicians on 0333 5 777 120
who would advise you what to do next.
Remember, data recovery analysis and consultation is FREE with Data Recovery UK. Unlike many other UK data recovery companies, we do not charge for data
recovery analysis or data recovery consultancy. You only pay if we successfully
recover your data.
Hard Disk Drive not detected in the BIOS: BIOS stands for Basic Input/Output
System and
it simply provides a set of instructions to your computer, telling it how to start, and
how to interface to
the first 'Boot' device. When it reaches the first boot device, it then
receives further
instructions thereof to follow up. This eventually leads to loading up your operating system,
if everything is OK.
During the
start-up, the
BIOS may fail to detect the hard drive, and therefore it is not listed by the
BIOS during POST. First,
check all
connections and try again. If it still doesn't work, failure to recognise
the hard drive may have been caused by a number
of factors, like
corrupt boot sector. However, at start-up, your computer can tell you whether
the hard drive has been detected by the BIOS or not. Power up the computer, and look for the on-screen
instruction to
tell you how to enter the BIOS. Usually this is achieved by pressing F1, F2 or
DEL keys.
Examine the menus for options on viewing the BIOS IDE peripheral setup and set
your BIOS to
automatically detect IDE drives.
On some BIOSes there is an option to "automatically detect
hard drives now". If you run this option and the computer 'hangs' or appears
inactive for a a
minute or more then it is likely that your hard disk drive has failed to
identify itself to the
system BIOS. Before getting too worried, power down the computer and unplug the
hard disk and check if all the jumpers on the hard drive are set correctly
according to the hard disk manufacturer's instructions.
Incorrect jumper setting
can prevent the hard drive from being detected by the BIOS. In some hard drives
such as IBM and Hitachi, incorrect jumper settings will corrupt the data and damage the
logical structure of the hard disk. Again, at this stage, you need to consult a
Data Recovery UK technicians who would advise you what to do next.
Remember, data recovery analysis and consultation is FREE with Data Recovery UK. Unlike many other UK data recovery companies, we do not charge for data
recovery analysis or data recovery consultancy. You only pay if we successfully
recover your data.
Power Surge, Reversed Polarity, Power Supply plugged in the wrong way around:
This is a frequent occurrence - particularly plugging the power lead in the wrong
way around.
Despite the shape of the molex connector, the cheaper versions are often are made of
a soft plastic
and can easily be plugged in incorrectly. Often this results in the drive
appearing totally
dead with no noise coming from the motor and an unpleasant burning smell.
This is specially true if you try to plug a laptop hard drive in a USB enclosure
or if you plug the laptop hard drive to a an IDE-to-laptop connector
incorrectly. You must make sure you do the right thing as the outcome
of your mistakes can be disastrous. Similar faults occur
when the power surge can damage the computer motherboard and hard drive
circuitry. In this case, you must immediately unplug the computer from the mains
power supply and remove the hard
drive to a safe
place until you send off the hard drive to the Data Recovery UK for data
recovery.
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Copyright © 2009 Data Recovery Lab Ltd.
Data Recovery Doctor,
Data Recovery
24/7,
Data
Doctors and
Computer Doctor are trading names for
Data Recovery UK Ltd.
All customers using the Data Recovery UK services are
bound by
Terms and Conditions of Service.
All trademarks are acknowledged
and belong to their rightful owners.
Data Recovery UK Ltd is registered in England &
Wales. Reg. No 06268942. VAT No. GB919408996. Head Office: 145-157 St
John Street, Clerkenwell, London EC1V 4PY. Reg. Office:
Premier House, 309 Ballards Lane, London N12 8LY.
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