How to remove ‘TurboCad Symbols’ pop-up

How to remove TurboCad Symbols pop-up

TurboCad Symbols is an annoying message that may pop up in your web-browser. This happens when the user opens the browser and instead of the homepage, he sees a blank page with the window titled “Windows Installer” saying “the feature you are trying to use is on a CD-ROM or other removable disk that is not available. Insert the ‘TurboCad symbols and click OK”. There are many reasons for the appearance of this error, it may be caused due to the system problems, Windows update errors, the impact of the virus, out of date drivers or damaged hard drives of your PC and so on. As a result, the user can’t launch the browser without facing TurboCad Symbols pop-up. Below, you will find several methods to fix TurboCad Symbols pop-up.

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Update: As it was found out, the main culprit responsible for this pop-up is the Chrome browser itself or rather its last update. Google support is aware of that and they promised to fix it in the new update. In the meantime, we’ll have to handle this ourselves.

Ways to fix TurboCad Symbols pop-up :

Below we present instructions that may solve the problem. Depending on your system, the solutions may slightly differ, so perform the steps suitable for your system.

Automatic solution

Repairing system errors may be not an easy task, so we should warn you that performing some of the steps may require above-average skills, so if you don’t feel experienced enough, you may apply to automatic tool.

Download SpyHunter

Combo Cleaner Antivirus is an anti-malware program for those users who want to forget about numerous system issues like TurboCad Symbols pop-up. Aside from fixing TurboCad Symbols pop-up, CLeanMyPC will also automatically resolve other issues boosting your computer speed and stabilizing its performance.

Or you may use manual methods:

Steps of manual resolving

Solution 1. Reset browser’s settings

  1. For this, first, make a backup of your bookmarks if you want to keep them
  2. Then go to C:\Users\username\AppData\Local\Google\
  3. Select Chrome folder and rename it as you wish, for example, Chrome.old
  4. Re-launch Google Chrome to check if the problem is solved.
  5. Import your bookmarks

Solution 2. Run chkdsk command

  1. Initiate the search for cmd
  2. In the results find Command Prompt
  3. Right-click it and choose Run as Administrator
  4. In the appeared window input chkdsk C: (or other letter of your drive) /f /r
  5. Hit the Enter key

Solution 3. Re-register the required components

  1. Initiate the search for ‘command prompt’ as administrator
  2. Type the following commands and hit Enter after each
      SC config wuauserv start= auto
      SC config bits start= auto
      SC config cryptsvc start= auto
      SC config trustedinstaller start= auto
    • Exit
  3. Reboot the PC

Solution 4. Delete Conflicting File

Use this method if the error message emerges when you’re performing an installation of software through InstallShield.

  1. Navigate to C:\Program Files\Common Files\InstallSheild\Professional\Runtime\ISProbe.tlb
  2. And remove ISProbe.tlb file


It is likely that you will need to view hidden files & folders to detect the file. For this open the Control Panel and click Folder Options. In the emerged window go to the tab View and mark the option ‘Show hidden files, folders, and drivers’

Solution 5. Update drivers

This problem is also often solved by a simple driver update. Old drivers may cause system errors so we advise keeping all your drivers up-to-date. To simplify this task, you may engage the services of some third-party programs such as DriverMax.

Download Driver Updater

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