Windows 8 and 8.1 Forums


Can't do a Windows Defender full scan on one laptop but

  1. #11


    Posts : 136
    Windows 8.1


    Quote Originally Posted by RolandJS View Post
    Are your laptops close to the same manufacturing date? If not, if they are like mine, a year+ apart, yes, one of mine is slower than the other. If you have twins, then I'm puzzled, unless one laptop runs more gizmos than the other.
    I would have to look up the manufacturing dates, but I just assumed they are of the same batch as I bought one a few months earlier than the other.

      My System SpecsSystem Spec

  2. #12


    You might want to run the SFC 3 times. SFC doesn't always fix everything on the first pass & it's usually recommended to run it 3X

    SFC /SCANNOW Command - Run in Windows 8

    If SFC could not fix something, then run the command again to see if it may be able to the next time. Sometimes it may take running the sfc /scannow command 3 times restarting the PC after each time to completely fix everything that it's able to.
    I have noticed that in general, things tend to run slower on a laptop since most don't have the power of a desktop. You might want to check your msconfig & see what all is starting up when you boot & eliminate the unnecessary programs.
      My System SpecsSystem Spec

  3. #13


    Posts : 136
    Windows 8.1


    [QUOTE=Borg 386;466580]You might want to run the SFC 3 times. SFC doesn't always fix everything on the first pass & it's usually recommended to run it 3X


    If SFC could not fix something, then run the command again to see if it may be able to the next time. Sometimes it may take running the sfc /scannow command 3 times restarting the PC after each time to completely fix everything that it's able to.
    Sorry but I don't understand why I need to to run sfc 3x, if after the first scan there are no integrity violations.,

    I have noticed that in general, things tend to run slower on a laptop since most don't have the power of a desktop. You might want to check your msconfig & see what all is starting up when you boot & eliminate the unnecessary programs.
    I have had a look in my task manager startup and can't see anything there that shouldn't be there.
      My System SpecsSystem Spec

  4. #14



    Trying to Sith things out
    Bamberg Germany
    Posts : 2,290
    Windows 10 Pro 64 bit


    To scan faster one needs at least 8GB RAM and a SSD. That's what I noticed on my windows 7 ASUS X54C laptop. I use Microsoft Security Essentials on that and it's basically the same as Defender. With the upgrades it only took 20min. for a full scan, with the stock 4GB RAM and a 350GB at 5400rpm disk I had to let it scan over night. My Lenovo H530 with Windows 8.1 update has 16GB RAM and an SSD(system) & 2TB 7200rpm HDD(plus a much better cpu) and a full scan(system) takes about half an hour because windows 8.1 has more "under the hood" and more apps and programs.
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  5. #15


    Posts : 375
    Win 8.1 64bit


    [QUOTE=nougart;466201
    I can try that thanks, I don't understand why one of my laptops can do a WD full scan with no probs and the other one could probably take days if I didn't cancel the scan. [/QUOTE]


    Is there a remarkable difference in memory and utilized file size between the 2 laptops ?
      My System SpecsSystem Spec

  6. #16


    Posts : 136
    Windows 8.1


    [QUOTE=torre;466971]
    Quote Originally Posted by nougart;466201
    I can try that thanks, I don't understand why one of my laptops can do a WD full scan with no probs and the other one could probably take days if I didn't cancel the scan. :([/QUOTE


    Is there a remarkable difference in memory and utilized file size between the 2 laptops ?
    No there is no difference in memory or file size.
      My System SpecsSystem Spec

  7. #17


    Quote Originally Posted by nougart View Post
    Sorry but I don't understand why I need to to run sfc 3x, if after the first scan there are no integrity violations.
    Well, you don't need to run it again, but it wouldn't hurt to run it again just on the off chance it did miss something.
      My System SpecsSystem Spec

  8. #18


    Posts : 136
    Windows 8.1


    Quote Originally Posted by Borg 386 View Post
    Quote Originally Posted by nougart View Post
    Sorry but I don't understand why I need to to run sfc 3x, if after the first scan there are no integrity violations.
    Well, you don't need to run it again, but it wouldn't hurt to run it again just on the off chance it did miss something.
    Hi Borg,
    I have run it again but no violations. I have just decided to use another A/V.
      My System SpecsSystem Spec

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