How do I undo Set Programs Associations?

I just got a new computer and installed iTunes onto it. I started to try and attempt to move my library from another computer to my new one when iTunes asked me to Set Associations for it. I didn't understand what I was doing and I just clicked select all and went on my way. Now, my computer's screen goes bright to dark and black and in intermintent patterns. I can't change it back and I'm worried it's compromised my computer. I don't understand what's happening other than it's saying that it's due to a program called DCPSysMgr from Dell Inc.. Can someone please explain to me what's going on and how to fix it! Thanks!

Question Info

Last updated March 15, 2018 Views 605 Applies to:

1. How did you copy the library from your old computer to the new one?
2. Also, could you provide us the  complete  error message about DCPSysMgr?
3. Is that an issue with all the applications or a particular set of applications?

Method 1.
I would ask you to perform a clean boot and check if any third party application is causing the conflict.
Refer to the article below for steps and more information about clean boot troubleshooting.
How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
Note: When the troubleshooting is over do not forget to reset the computer to normal startup. Follow the step 7 in the above article.

Method 2.
You may also try uninstalling and re-install the iTunes and check.
Step I.
To begin with troubleshooting, you can try to uninstall ITunes and check the file associations are set to default.
To uninstall iTunes, you can follow the below steps:
a. Open Programs and Features by clicking the Start button, clicking Control Panel, clicking Programs, and then clicking Programs and Features.
b. Select a ITunes, and then click Uninstall.
Step II.
Once you uninstall ITunes from your computer, follow the below link that will automatically fix the file associations‘When you run an .exe file on a Windows Vista-based or Windows 7-based computer, the file may start a different program’:
Step III.
If you are able to fix the file associations, you should run a Malware scan on your computer to check if this is caused by a virus infection.
You can follow the below link and run a Malware scan on your computer:
Method 3.
You are also recommended to update the display drivers from the manufacturer's website.
For more information refer to the link below:

Hope this helps.

Thanks and Regards:
Shekhar S - Microsoft Support.

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Thanks and Regards,
Shekhar Sharma

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