Windows 10: Can I harm my computer installing an unsigned driver?

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  1.    01 Jun 2018 #1

    Can I harm my computer installing an unsigned driver?


    Windows can't verify the publisher of this driver software...

    But Marvell website

    Support - Driver Downloads - Marvell

    Doesn't have in its website the Marvell 91XX Sata Controller 6GB Driver, can I really harm my computer?

    I have installed the same driver for Windows 10 without issue, but with Windows 7 I got this message:

    Click image for larger version. 

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    Should I proceed with the installation?

    It seems the driver is unsigned

    Thanks

    Came
      My ComputersSystem Spec

  2. Masterchiefxx17's Avatar
    Posts : 418
    Windows 10 Professional 64bit
       01 Jun 2018 #2

    It is of course a risk to use an unsigned driver, but if you trust the provider and where you got the driver from it should be fine. I have used unsigned drivers with success before.
      My ComputerSystem Spec

  3.    01 Jun 2018 #3

    Masterchiefxx17 said: View Post
    It is of course a risk to use an unsigned driver, but if you trust the provider and where you got the driver from it should be fine. I have used unsigned drivers with success before.
    A risk of malware only?
      My ComputersSystem Spec

  4.    01 Jun 2018 #4

    If it is the same driver it is signed but probably signing certificate expired or is not trusted in win7, click on See details.
      My ComputerSystem Spec

  5.    02 Jun 2018 #5

    No, but I would obtain the driver from a trusted source e.g. equipment manufacturer.
      My ComputersSystem Spec

  6.    02 Jun 2018 #6

    If obtained from a trusted source, sure not to be malware infected, worst thing that can happen is that it wouldn't work. Signing a driver is not same as signing a file/application for security reasons.
      My ComputersSystem Spec

  7. Cliff S's Avatar
    Posts : 21,635
    Win10 Pro, Win10 Pro N, Win10 Home, Win10 Pro Insider Fast Ring, Windows 8.1 Pro, Ubuntu
       02 Jun 2018 #7

    To use unsigned drivers/old outdated driver certificates, doesn't secure boot need to be disabled on UEFI capable systems?
      My ComputersSystem Spec

  8.    02 Jun 2018 #8

    The major risk of installing an unsigned driver is a boot loop (constant blue screen of death) . its usually curable by getting into safe mode and removing the driver . despite that seems simple but its not if your bios comes to be a UEFI bios (comes enabled by default on most laptops) , where i suggest before you do the install to always disable UEFI or switch it to classic mode based on your bios make so you can at least use a bootable media or whatever other fix disks to be able to fix your windows .
      My ComputerSystem Spec

  9.    02 Jun 2018 #9

    nIGHTmAYOR said: View Post
    The major risk of installing an unsigned driver is a boot loop (constant blue screen of death) . its usually curable by getting into safe mode and removing the driver . despite that seems simple but its not if your bios comes to be a UEFI bios (comes enabled by default on most laptops) , where i suggest before you do the install to always disable UEFI or switch it to classic mode based on your bios make so you can at least use a bootable media or whatever other fix disks to be able to fix your windows .
    Understood the risk

    Very strange issue in Windows 10 the driver is signed but not for Windows 7, in a few hours I will post an screenshot installing this driver on Windows 7

    Thanks

    Click image for larger version. 

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      My ComputersSystem Spec

  10.    03 Jun 2018 #10

    Cliff S said: View Post
    To use unsigned drivers/old outdated driver certificates, doesn't secure boot need to be disabled on UEFI capable systems?
    Not on my PC.
      My ComputersSystem Spec


 
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