Windows 10: Removing an unwanted "choose an operation system option".

How can I remove an operating system entry from "choose an operating system" option at startup. I've manually deleted those extra operating systems but didn't knew that it would cause this problem. It only shows up here, I can not find any other files of Prime OS and Phoenix OS.

:)

 

' choose an operation system to start"

Hi Bob,

To better assist you, do let us the complete message that you receive.

Sometimes, this could be due to two operating system installed in your computer. Just to make sure this is not the case, I suggest you to try the steps below:

1. Press Windows key + R.

2. Type msconfig and press enter.

3. Click the "boot" tab and check if there are any other operating system listed.

4. In addition, change the timeout time to 3 seconds(default)

Let us know the result, we will be glad to help if you need further assistance.

 

Choosing an operating system on Startup of Pc

Hi

Thanks for all the previous advice to cure the above problem but still it persists.

When I start the pc I get the option to choose an operating system with a 30 sec countdown where it then selects windows 10 (default) by itself.

This has now been happening for about 2 weeks and previously just booted straight to windows 10.

I would have thought there must be a way to return the pc to just boot to windows 10 as it did previously.

As mentioned all the suggestions previous have come back all ok with no faults.

Unfortunately the most recent advice below wont let me do it as it tells me I have to add a value of between

3 and 999. Also the Pc is already set to windows 10 as default.

Again would be grateful for help or advice

Thanks

Eddie

Amarjeet_Paul replied on

• Microsoft
• Support Engineer
  

Accomplishments

• Microsoft
• Support Engineer
  

Hi Eddie,

Thank you for posting in Microsoft community.

We understand your concern and will certainly assist you to solve it.

The issue you face normally happens if someone had a old operating system and used it to upgrade to a newer version of it or completely install a new Operating system. Hence, follow the below steps to troubleshoot the issue.

1. Please press Windows key and R key and open the run dialog box.

2. In the Run dialog box, please type “msconfig”.

3. Enter the credentials (if needed), and there in the system configuration window, please select the
boot tab.

4. There, you will get the different Operating systems
installed in your computer.

5. Select the Operating system that you are currently using and select “set as default” option and then select the Timeout as “0” seconds.

5. Select Apply and Ok.

Please let us know if the issue got resolved or you need any further assistance.

Would again be grateful for advice

Thanks

Eddie

 

Turning off unwanted operating systems

Hi,

Thank you for posting your query in Microsoft Community.

I understand the issue that you are currently facing, we will try the best we can to resolve your issue.

Perform the steps below and check if it helps.

1. Press Windows + X, then
Select System.

2. Click/tap on the Advanced system settings link on the left, and close the System window.

3. Click/tap on the Settings button under
Startup and Recovery.

4. Select the OS (ex: Windows 10) you want as the default in the Default operating system drop down menu, and click/tap on
OK.

5. Restart the PC.

Choose Windows 10 default and uncheck the option Time to display the list of operating system.

Hope this helps in resolving the issue. If issue persists, do get back to us. We will be happy to assist you.