Windows 7: How do I restore my default settings in Windows 7?

URGENT HELP, Please! Earlier today, I tried to open an exe file in my downloads. It was for a printable coupon. When I clicked on 'open', I was prompted to choose a programme in which to open this file. Windows recommended 'Media Player' ...? Foolishly, I clicked on this and, ever since then, every programme on my computer opens as Media Player! Even the icons in my task bar show as Media Player! I cannot imagine which programme was used to open this type of exe file previously. Nothing listed appears to be the right one. I have asked all over the internet, phoned my ISP, no one can help. I've even tried a couple of fixes on here but I don't really know what went wrong or exactly what I need to restore. PLEASE, can anyone help? I cannot even switch off my laptop because I'll never get back onto the internet - which now opens as Media Player!!!

Hello Mozer, and welcome to Seven Forums.

If you like, you can download and merge the .reg file for the listed exe option in the tutorial below to restore the default associations for .exe files.

Default File Type Associations - Restore

If that doesn't help, then you could do a system restore at boot using a restore point dated before you made this change to undo it.

God bless you, Brink!!! Thank you SOoooooooooo much!!! This has caused me so much stress for hours today and I can honestly say you have saved my sanity and my life. I owe you, and if only I could get beamed over to the USA, I'd buy you a present!

Cannot say in words what you have done for me.

Mo x

You're most welcome Mo. I'm glad it could help.