WINDOWS 7 - SAVING FILE

1.Open the Start menu
2.Go to Control Panel ¿ System and Security
3.Click "Change User Account Control settings"
4.Drag the slider down to "Never notify" to disable UAC, and click OK
5.Restart Windows for the change to take effect

I guess Ram was faster than me.

:)

You can try this also if you still have admin rights on the computer

Right click on the C drive
Click properties
Click advanced at the bottom
Go to Owner's tab
Change ownership to your user account
Check the box to include sub folders

Don't save any files to C:\, that is a security risk and most of the time not necessary. You should rather save them to either your user's folder, or the public folder. Also, NEVER turn off UAC, or then only temporarily if there is a program that requires you to turn it off. But turn it back on after that. Don't undermine the security enhancements that Windows 7 gives you over previous OS's. You should rather get used to the new security concept and properly use it.

I agree with rindi.

Are you really "not able to save any file on c drive" or just in the root of C: (C:\)?

If it is the root of C:, then I would agree with rindi.  You should be able to avoid saving files there.

Just FYI
Inability to save files on C Drive most times is a symptom that virus activity exist on the computer especially if the user account is an administrator account. Protect your computer by running a virus scan and/or legitimate registry cleaner and take back the ownership of the drive.

Everything on the computer (assuming a simple standard installation) is on the C Drive. There is really not much of a difference with respect to security risk whether the file is on the root or in a folder inside the root of C:\. It is just advisable to not store files on the root to avoid clumsiness but not necessarily a security vulnerability. The C drive is shared administratively by default to administrators and accessible over the network by \\computername\C$ OR \\IPAddress\C$. So as an administrator on the computer with limited rights to C drive usually is a symptom of virus or worm activity.

Imagine the owner of a house with no access to the garage - That is a cause for alarm!

Moreso, it is better to be safe than sorry.

Let me reiterate that this is assuming the account in question is an administrator account. Check the status in user accounts to verify. If your account is not an administrator, then worry less about any virus activity, otherwise, act as quickly as possible.