Windows 10: Windows 10 Pro running abnormally slow on Lenovo T420

Discus and support Windows 10 Pro running abnormally slow on Lenovo T420 in Windows 10 Performance & Maintenance to solve the problem; Greetings everyone, I am running Windows 10 Pro for almost 2 months now on my Lenovo T420 laptop. It's been running great until a couple of weeks... Discussion in 'Windows 10 Performance & Maintenance' started by vrod, Nov 11, 2015.

  1. vrod Win User

    Windows 10 Pro running abnormally slow on Lenovo T420


    Greetings everyone,

    I am running Windows 10 Pro for almost 2 months now on my Lenovo T420 laptop. It's been running great until a couple of weeks ago where it dived bigtime in performance. I suspected it was a new 3rd party battery (had been running great for a couple of weeks as well), which was the problem. The battery did indeed have a problem and without AC power, the laptop would at last not even start. I took the battery out completely and started the laptop on pure AC power and it worked great for another week. Now, I have the problem again.

    Main symptoms:
    - IO 4x less than usual
    - Slow reaction on the entire system
    - Applications open and perform very poor and slow
    - Windows search never opens for example "dxdiag", I have to run this through the "Run" application.

    It's running super slow, IO's is 4x of the normal (see attachments). Random IOps have dropped a lot while sequential read/writes is still the same... Task manager is nowhere near busy and I've tried to disable the page file completely. I do have Symantec AV but this is not affecting the performance at all. Tried to run DISM to check for index corruption, all fine. I also suspected the SATA controller (SSD is not bad since I have tested with another one as well, same result) and tried to update the driver, but to no avail.

    Would anyone have an idea? This is like having Internet Explorer all plastered over my machine *Sad

    Thanks!
    - Chris

    :)
     
  2. HawkeyeMT Win User

    Windows 10 Trying to Install to Incompatible Lenovo T420

    I have a Lenovo T420 with an Intel Core i5-2520M. Lenovo website says this machine cannot run Windows 10 due to incompatible Intel HD Graphics 3000 embedded in the 2520M processor. However, Windows 10 detects the T420 as compatible and keeps trying to install.
    I would like to have Windows 10 and tried the install, but video was erratic, screen goes black & have to reboot to get video back, only to occur again a few minutes later. Lenovo says no fix forthcoming. How do I stop Windows 10 from trying to install on incompatible
    T420 laptop (or better yet, get it to run properly)?
     
    HawkeyeMT, Nov 11, 2015
    #2
  3. NO color in Windows 10

    I have a Lenovo T420 with Windows 10 Pro. Until the last update 2 days ago, it seemed to be working fine. Now I have NO color in Windows and any apps within it.

    Also, Outlook in Office 10 gives me a no display screen, except for calendar reminders, The only way I can get at the email is in safe mode via RUN.

    David
     
    DavidWBeard, Nov 11, 2015
    #3
  4. spapakons Win User

    Windows 10 Pro running abnormally slow on Lenovo T420

    Could it be malware using up your resources? Use Malwarebytes Antimalware to find out. If you find too many, you may want to check with a second utility to make sure. I would then use Spybot. No need to go Pro, the free versions should do the job. Delete anything found. Also have a look at your startup programs. Press Win+R to open a Run box and execute msconfig to open System Configuration. Then go to the services tab and check the box to hide all Microsoft services. See the remaining services and uncheck the box to disable any non-important (such as updaters). Then click on the Startup tab, Open Task Manager. See all startup applications and disable any non-important (Skype, QTtask, Java updater etc). You don't need everything to load at startup! You can manually double-click and load the application at any time.
     
    spapakons, Nov 11, 2015
    #4
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Windows 10 Pro running abnormally slow on Lenovo T420

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