Reinstalled Vista accidentally on old harddisk

[Terrextre]

A day before I had installed a new motherboard on my computer. After that I powered it on to start and the system asked me for a boot up disk. Now instead of booting from hard disk, I accidentally put in my Vista CD in the CD Drive and booted it. Now, I have a fresh installation of vista and I saved all my other files on that disk drive in a file called OldPC.old

Now my problem is that I can copy files from OldPC.old to new vista but I can't use it. Can anyone help me on this?

[switchblade327]

Sorry dude but you need to re-install all the applications and copy everything you need from OldPC.old. There is no way out of it.

[Howitzer]

I accidentally put in my Vista CD in the CD Drive and booted it. Now, I have a fresh installation of vista and I saved all my other files on that disk drive in a file called OldPC.old

You installed the Vista accidentally? Is that right? How someone can do that? Strange

[Rkhon]

Well, well, well there is nothing such strange thing happened over here. Generally it is recommended that you should reinstall the operating system if you are installing a new motherboard to get rid the problems that can be faced in the near future such as driver issues and many more.