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I have a laptop that came with Win 7 (the HDD is on SATA II). About a year ago, I installed a Samsung 850 Evo 500GB (cloned the data from the HDD). It worked beautifully (always <5s boot time). A few months later, I auto-upgraded to Win 10. Everything still worked great (as far as the SSD is concerned; obviously I had a few usual Win 10 headaches).

Two days ago, I wiped the drive (using a Secure Erase bootable CD made by Samsung Magician) and fresh installed Win 10 (1511 build). Now the entire machine is sloow (>1min boot time, frequent lagging, etc. -- nothing like the performance I've been seeing for the past year.) Updating all of the drivers did nothing to improve that.

I have wiped and reinstalled again, and it still didn't fix it. I am fairly sure that the drive is causing the problems; it mostly lags when the "drive access" light is illuminated.

I have found many pieces of advice discussing issues that can occur with SSDs and Windows 10; usually a fresh install is the solution, not the problem.

Additional info:

  • In Task Manager, Disk is stuck at >95%, even with total I/O at less than 1MB/s.
  • I used the same Samsung Magician Secure Erase and Windows Installer boot drives for another Win 10 install on another computer, and they both worked fine.
  • In Samsung Magician performance test, seq. read is 553 MB/s and seq. write is 88 MB/s. I watched the Resource Monitor; Read never went over 1MB/s, but Write went up to 200MB/s. What is happening here?
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  • have you tried checking which process is using the most disk time with resource monitor?
    – Blaine
    Commented May 22, 2016 at 2:15
  • @Blaine Resource Monitor (as perfmon.exe) and System. Both only around 500KB/s. Looking at the drive and SATA II specs, 100% should be 3Gb/s...
    – Kittsil
    Commented May 22, 2016 at 2:24
  • hmm, certainty does sound like an issue with the ssd controler
    – Blaine
    Commented May 22, 2016 at 2:29
  • Welcome to Super User! Please don't edit your question to include the answer, answer your own question. Please read Can I answer my own question?
    – DavidPostill ♦
    Commented May 22, 2016 at 10:23
  • @Kittsil I have added an answer
    – Blaine
    Commented May 26, 2016 at 4:32

3 Answers 3

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Answering on behalf of my own comments as well as OP's troubleshooting. The issue wound up being with the "OOD". OP also was helped by this thread superuser.com/a/674120/596596.

When troubleshooting overall, make sure that you have isolated the problem to a specific component. Try a known working hard drive in the computer at fault, and try the hard drive from the faulty computer in a known working computer.

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Maybe there's some problem with windows setup, from which you are fresh installing windows 10. I recommend using Microsft's official windows setup tool to create windows 10 setup usb/dvd and install using that.

https://www.microsoft.com/en-us/download/windows-usb-dvd-download-tool

Also make sure to download windows for correct architecture of your pc (32-bit or 64-bit).

P.S. I had used the pirated setup of windows 10 and it caused me same problem in my ssd. Go for official windows :).

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  • I did use official Win 10 setup. I also used it on another computer with no problems. I should have said that, and will add it to the question now.
    – Kittsil
    Commented May 22, 2016 at 2:19
  • Have you tried other OS than windows 10 like Linux or windows 7/8.1 . If you still face the issue, then i must say, problem is hardware specific.
    – Himanshu Chauhan
    Commented May 22, 2016 at 2:23
  • Thanks, that is good advice. I will try Linux next if I can't get it working this time.
    – Kittsil
    Commented May 22, 2016 at 2:26
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    try installing to a different hard drive if you can to see if it is in fact a problem with the hard drive (or use the same hdd in a different computer)
    – Blaine
    Commented May 22, 2016 at 2:30
  • @Kittsil Oh good! What was the issue?
    – Blaine
    Commented May 22, 2016 at 9:28
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I am going to offer two suggestions. First... don't use Samsung's erase tool. Boot the Windows 10 media and as part of a clean install delete all the partition on the drive from withing the setup procedure.

Secondly.... get build 1607. If you re-download the media creation tool and re-create the ISO it should be build 1607.

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  • 1
    The author already figured out the problem. They had a hardware problem. Due to this fact, this answer, doesn't really answer the question. Always important to check, if the question has already been solved, before submitting generic advice like this.
    – Ramhound
    Commented Nov 30, 2016 at 22:31

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