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 data recovery

FAQ

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  • Hard drive

    • If your hard drive has any problem, do absolutely not do the following things

      • put your hard drive in the fridge. It may bring dampness into it.
      • hit the disk on the side or on the top. You may damage the reading heads and the platters.
      • open the hard drive by your own. Open the disk in a non-sterile environment may bring some particles into the disk and damage the platters' surface.
      • in case of shock, don't try to fix it yourself, you may damage the disk. Appeal to a professional !
      In general, when the disk isn't functional anymore, the more you try to use it, the more you risk breaking it definitively. As the reading heads are sliding about 7 nanometers over the platters, any shock or any dust particle could severly damage the platters' surface, making the data impossible to read.
    • Unusual noise, jingle, friction

      A noise such as a jingle, « clac-clac-clac », shrill noise, or a dull sound are probably due to a physical problem involving the reading heads.
      This noise is typical of a reading head's problem. Either one or more heads are defetcive and can't read the disk, or the platter's surface is damaged, so the reading heads can't read it.
      Problem with head stack : example 1 - example 2 - example 3
      Problem with motor : example
      Problem with stiction : example
      What to do ? If your hard drive makes that kind of noises, you're facing a big problem that you won't be able to solve on your own. Don't use your hard drive and bring it to a specialist who will be able to deal with the problem.
    • The hard drive isn't detected by Windows / Mac OS anymore

      Your hard drive isn't detected by the operating system anymore, it may be a physical problem. It can also be a simple software problem if the operating system itself is defective.
      What to do ? If it's an external drive, verify connections, then reboot the drive. You can also try to plug the disk on another computer. If it's an internal hard drive, it may mean that the masterboot record is defective (message « no system found »). Then check if the hard drive is detected by the BIOS.
    • The hard drive isn't detected by the BIOS

      To access the BIOS, press F2 or F9 or F12 or DEL, etc. You will then see if it's detected or not.
      When it doesn't appear in the BIOS, it can be a firmware problem, a connector problem, a System Area problem or the surface of the platters is damaged.
      What to do ? Check if all the connectors are correctly plugged. If not, plug your HDD on another computer and if your hard drive is still not detected, You're facing a serious physical problem. You should then contact a specialist.
    • Windows / Mac OS isn't booting properly

      If Windows seems to start but stops while the starting process, it may mean that you're facing a hard drive problem involving a defective platters' surface.
      What to do ? Try to plug your HDD on another computer and try to access the data. If it doesn't work, you're facing a defective surface problem and we recomand you to contact a specialist.
    • My HDD fell

      If the disk falls, its surface or reading heads can be damaged. If the hard drive doesn't start, don't try to start it over and over because you may damage the disk more seriously.
      What to do ? If you hear a noise such as a jingle, the problem is probably involving the reading heads. If you don't hear any noise, but your drive don't start due to a fall, it may be another physical problem. At any rate, bring it quickly to a professional and don't try to fix it yourself.
    • Defective circuit board

      Your circuit board is defective due to a failure or an overvoltage, then your hard drive isn't detected anymore.
      What to do ? Don't try to open your HDD on your own. Contact a specialist who will be able to find if the problem comes from your circuit board.
    • I formatted my HDD

      Inadvertently or following an error message from your computer, you formatted your hard drive. Then you can't access your data and you're facing a software problem.
      What to do ? First of all, don't save or install anything on that hard drive, it will increase your chances to recover your data. Secondly, don't use a data recovery software on your own because, a wrong use may lead to a definitive loss of your data.
    • I reinstalled my OS

      After the reinstallation of your Operating System, you notice that you can't find your data on the drive anymore.
      What to do ? It's most probably a partition problem and thus, a software problem. Don't format your HDD and don't try to reinstall the Operating System again, or you may lose your data definitively.
      To recover your data, you must call a professional.
    • Flood / Fire

      If your hard drive has been through flood or fire, you'll have to face a physical problem. Many problems can ensue from fire/flood, such as melting of components, dampness into the disk, defectiveness of the electronics.
      What to do ? Don't dry your HDD with a hairdryer, and don't open it to clean possible soot stains. Don't try to repair or plug your hard drive on your own.
      Contact a specialist who will be able to determine the problem and to act consequently in a suitable environment.
  • RAID

    • The RAID system isn't detected anymore on the computer

      If your RAID system isn't detected on your computer, it may mean that your RAID controller is defective or the configuration has been lost by the RAID controller.

      What to do ?
      It may be dangerous to attempt recreate the RAID by submitting new parameters. If you don't choose the right values, you may lose everything. For more security, ask a data recovery specialist to do that.
    • The RAID system is in failsoft mode

      The RAID controller indicate that the RAID system is in failsoft mode. Nevertheless, the controller can still be functional. You should solve the problem quickly.

      What to do ?
      Define why the RAID system is in failsoft mode. Most probably a hard drive is defective and so the RAID system can't function properly. If this is the case, then change the defective hard drive as soon as possible, as far as the RAID system allows you to do so.
    • The RAID controller is defecticve

      Your RAID system isn't detected on your computer anymore, so you can't access to the data beacause the controller that manage the RAID access is defective.

      What to do ?
      It may be dangerous to attempt recreate the RAID by submitting new parameters. If you don't choose the right values, you may lose everything. For more security, ask a data recovery specialist to do that.
    • RAID 5: a hard drive is defective

      Your RAID 5 system has at least 3 HDDs. If a HDD is defective, your RAID 5 system is in failsoft mode but still working.

      What to do ?
      You should change the defective drive as soon as possible. Normally, the RAID controller will integrate the new HDD and recreate the data, so your RAID system will be completely secured again. This operation may last a few hours.
    • RAID 5: at least 2 HDDs are defective

      Your RAID 5 system can take a single HDD breakdown, not more. Your RAID system isn't functional anymore.

      What to do ?
      You should ask a data recovery specialist to repair the defective device in order to repair and recover the data with the other functional HDDs.
    • RAID 6: one or two HDDs are defective

      Your RAID 6 system has at least 4 HDDs. If a HDD or two are defective, your RAID 6 system is in failsoft mode but still working.

      What to do ?
      You should change the defective drive as soon as possible. Normally, the RAID controller will integrate the new HDD and recreate the data, so your RAID system will be completely secured again. This operation may last a few hours.
    • RAID 6: at least 3 HDDs are defective

      Your RAID 6 system can take two HDD breakdowns, not more. Your RAID system isn't functional anymore.

      What to do ?
      You should ask a data recovery specialist to repair the defective device in order to repair and recover the data with the other functional HDDs.
    • RAID 0: one or more HDDs are deffective.

      The RAID 0 system is an aggregate of a few HDDs. Each file is divided into parts on every HDDs of the RAID 0 system. If a HDD is defective, there will be missing file parts so you can't access to the data anymore.

      What to do ?
      You should ask a data recovery specialist to repair the defective device in order to repair and recover the data with the other functional HDDs.
    • JBOD: one or more HDDs are defective

      The JBOD system is an aggregate of a few HDDs. Unlike the RAID 0 system, the data is written on the first HDD. Then, when the first one is full, the data is written on the second HDD. And so on.

      What to do ?
      If the defective HDD doesn't contain any data and the JBOD system is built with two HDDs, you should be able to plug the first HDD on a computer and recover your data.
      Should the opposite occur, you should ask a data recovery specialist to repair the defective device in order to repair and recover the data with the other functional HDDs.
    • RAID 1: one or more HDDs are defective.

      With a RAID 1 system, all the HDDs are like mirrors of the others.

      What to do ?
      If all the HDDs are defective, you should ask a data recovery specialist to repair the defective device in order to repair and recover the data with the other functional HDDs.
      Should the opposite occur, it means that the copy HDD is still intact. So, you can plug it on a computer and recover your data.
  • USB key

    • If you encounter a problem with it, do absolutely not do the following things :

      • Remove the key from your computer without closing the program
      • Don't take to pieces the USB key on your own
      • Don't format it
      • Don't force the plug in the socket if there's any resistance
      When your USB key doesn't work anymore, it can be two different kinds of breakdown, physical or software. At any rate, don't try to repair it by yourself. The more you try to repair it, the more you risk to damage irreversibly your data.
    • Isn't detected by Windows / Mac OS anymore

      If your USB key isn't detected by the operating system, it may either mean that the partition of the key is damaged (software problem) or that the controller is damaged (physical problem).
      What to do ? Try to plug your USB key on another computer and see if it's detected. Also check if the LED is igniting normally. If not, or if it's blinking, then your key is defective.
    • The LED doesn't ignite

      The LED of your USB key doesn't ignite anymore, or is blinking. It's an internal problem. This may be due to an alimentation problem, but more probably to an internal component problem.
      What to do ? You can't go any further by yourself without risking to damage more your USB key. Please contact a specialist who will be able to detect the exact problem and fix it.
    • The plug is broken

      Your USB plug is broken. Dont try to force your USB to plug in and don't open the key to repair it on your own. If you do so, you may damage an electronic component of the USB key.
      What to do ? Remove carefully the USB key from your computer if it's still plugged in, then call an electronics specialist.
    • The key is broken in pieces

      If your USB key is so damaged that it's broken in pieces, it's really important to avoid touching the pieces as much as possible. Don't try to patch it up or to take the components out of the USB key.
      What to do ? Pick up all the pieces, put it in a sachet. You can then ask a professional to try to recover the data that was on the USB key.
    • Flood / Fire

      If your USB key has been through fire or flood, you're facing a physical problem.
      Many problems can be due to fire/flood, such as melting of components, dampness in the USB key, or defectiveness of the electronics.
      What to do ? Don't dry your USB key with a hairdryer, and don't open it to clean possible soot stains. Don't try to repair or plug your hard drive on your own.
      Contact a specialist who will be able to determine the problem and to act consequently in a suitable environment.
  • SSD

    • Si votre disque dur SSD est défectueux, n'effectuez surtout pas les manipulations suivantes :

      • ne l'ouvrez pas, vous risquez d'endommager l'un des composants internes
      • ne le formater, vous risquez de les perdre irrémédiablement
      • ne le tapez pas sur les côtés ou sur le dessus du disque dur, vous risquez d'endommager physiquement les composants internes
      • ne l'allumer pas et éteindre à de nombreuses reprises, vous prenez ainsi le risque d'induire une surtension
    • SSD plus visible Windows / Mac OS

      Votre disque dur n'est pas reconnu par votre système d'exploitation, il peut s'agir d'un problème physique. Il peut également s'agir d'un problème logiciel si le système d'exploitation lui-même est défectueux ou si la partition du disque SSD est corrompue.
      Que faire ? S'il s'agit d'un disque dur externe, vérifier les connexions puis redémarrer le disque. Essayez également de brancher le disque dur externe sur un autre ordinateur. S'il n'est toujours pas visible, regardez alors si le disque est reconnu dans le BIOS, si ce n'est pas le cas, c'est un problème physique du disque dur. Il vous faut alors vous adresser à un spécialiste.
      S'il s'agit d'un disque dur interne, il peut s'agir du contrôleur interne qui est défectueux. Controllez les connexions et regardez alors si le disque est reconnu dans le BIOS. Si ce n'est pas le cas, vous êtes alors confrontés à un problème de type physique.
    • La LED ne s'allume plus

      La LED de votre disque dur SSD ne s'allume plus, ou clignote. Il s'agit d'un problème soit au niveau de l'alimentation, mais plus probablement au niveau de l'un des composants interne du disque dur SSD, tel que le contrôleur interne ou une puce mémoire endommagée.
      Que faire ? Si votre disque dur n'est pas reconnu dans le BIOS, vous ne pouvez effectuer de manipulation vous-même sans risque d'endommager votre disque dur SSD encore plus. Prenez contact avec un spécialiste qui sera à même de détecter le problème subi et d'y remédier.
    • Le connecteur SATA est cassé

      Votre connecteur USB est cassé. Ne tentez pas de forcer au niveau du connecteur et n'ouvrez pas votre disque dur dans une tentative de réparer le connecteur vous-même. En procédant de cette manière, vous risquez d'endommager par mégarde un des composants interne du disque dur SSD.
      Que faire ? Retirez délicatement disque dur de l'ordinateur, puis faites appel à un spécialiste en récupération.
    • N'est plus reconnu par le BIOS

      Pour accéder au BIOS, F2 ou F9 ou F12 ou DEL, etc. Vous verrez alors s'il est reconnu ou pas dans le BIOS. Lorsqu'il n'est pas reconnu par le BIOS, il peut s'agir d'un problème des connecteurs, du firmware, du controleur ou encore des puces mémoires.
      Que faire ? Regardez si tous les connecteurs sont correctement branchés. Si ce n'est pas le cas, branchez votre disque dur sur autre ordinateur. Si votre disque dur n'est toujours pas reconnu, vous êtes confrontés à un problème physique du disque dur. Il vous faut alors vous adresser à un spécialiste.
  • CD / DVD

    • Si vous rencontrez un problème avec votre CD/DVD, n'effectuez surtout pas les manipulations suivantes :

      • ne le formattez pas
      • ne le mettez pas au frigo
      • ne grattez pas la surface du CD/DVD
      • ne le nettoyez pas avec un produit corrosif
    • CD/DVD rayé

      Votre CD/DVD est rayé, il est essentiel de ne pas provoquer plus de rayures.Pour ce faire, cessez d'utiliser votre CD/DVD puis retirez-le délicatement du lecteur.
      Que faire ? Lorsqu'un CD/DVD est rayé, il existe une possibilité de récupérer les données contenues, pour autant que la surface ne soit pas trop dégradée. Mettez votre CD/DVD dans une fourre adéquate puis apportez le à un spécialiste en récupération.
    • CD/DVD cassé

      Si votre CD/DVD est physiquement brisé, ne tentez pas de recoller les morceaux. Vous risquez d'empêcher un travail de récupération de données. Ne soudez pas les morceaux entre eux, et ne tentez pas de lire votre CD/DVD en ayant scotché les divers morceaux.
      Que faire ? Récupérez les différents morceaux et réunissez-les dans une même pochette. Dans certain cas, il est possible de récupérer les données mais cela n'est pas garantie. Vous pourrez ainsi apporter tous les morceaux à un spécialiste en récupération.
    • CD/DVD difficile d'accès

      Si vous avez de la peine à accéder à votre CD/DVD, il se peut que la surface de ce dernier soit en train de se dégrader. Il se peut également que ce soit le lecteur qui pose problème.
      Que faire ? Essayez de lire le contenu du CD/DVD sur un autre ordinateur. Si cela ne fonctionne pas, il faudra faire appel à un spécialiste en récupération.