Issue with Windows 7 opening programs

I was surfing the internet tonight when all of a sudden I get some notification about a scanning my computer which inadvertently was a trojan of some sort.  I found the source and deleted it.  Now, if I try to open any program, it goes to the prompt where it says please pick which program you would like to use to open this file.  Only way I can get any programs to work is if I run it as administrator.  What do I do to get everything back to normal so that all my programs open like they should and my browser opens the internet as opposed to open a prompt to open a file with a chosen program.  Thanks!
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Try a restore point from an earlier time. Also run malwarebytes if you havent already.
virus is trojen horse ,

remove it by help of following link,

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If a restore point does not work, I always copy what data I want to to a usb drive and restore Windows 7. When you format and restore you will get rid of whatever virus/spyware in lingering and your machine with run much faster.
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You can probably avoid doing a full wipe-and-reload.  There are some fairly standard procedures to follow.

First of all, you will want to run either RKill or RogueKiller to stop any malware processes that may still be running.  Here is good reference article written by Younghv, one of the EE community's very best malware experts:

After that, you can specifically fix your problem with opening programs by following the instructions on this page and utilize the link found on the subsequent list to restore the default EXE file association:

Windows 7 Default File Type Associations - Restore

Finally, as others have already suggested, run a Malwarebytes scan to help ensure that you are clean.  Here is another great Younghv reference article that outlines the entire process:
VBBRettAuthor Commented:
Well, I figured out a solution.  I ran Internet Explorer, and clicked on the program that was running that they were saying for me to purchase some software for $50 or $75.  I right clicked that and it directed me to a file in the process tab of running processes.  I then opened the folder of that file and deleted the executable file.  I then rebooted, when I rebooted, it did not allow me to run Internet Explorer as I should.  It directed me to the prompt, what program would you like to open this file with?  So, I opened IE with Administrative Permissions.  I then went to and downloaded the software as a trial copy and ran the malware search process which caught the Trojans/malware and any type of ill willed files that do not belong.  It is now running as it should.  I plan to install some sort of firewall/virus protection software to protect myself.  Wiping the hard drive clean and reinstalling would have been overkill but sometimes it is necessary; not in this case.  I will now reward points to all that we're correct.  Thank you for your help.
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