Windows 7: Office 2010 Pro Plus will not install on Win 7 Pro x64

Have you copied the DVD to your hard drive as I suggested and tried installing from there?

Even logged in on the Admin ID, Win 7 does not give you full update rights to the machine. It is a feature of Win7. Try right clicking on the installation file and select "Run As Admin" to run the installation.

Here is the rest of my "full collection" of access rights tips. Hopefully you can find one that will do the trick for you:

How to fix Access Rights problem Sometimes the problem has been that Windows has had problems granting the right access to files, folders and the registry. The following tips provide some workarounds.
As you go from XP to Vista to Win7 certain operations require higher access rights to perform. These access rights are “higher” than even those granted to the Administrator ID by default. These “elevated” rights are accessed by way of the UAC confirmation dialog which is invoked when you select to “Run As Administrator”.
In theory, any one of the following tips should work. The process is: run one of the fixes, run each affected Office app, reboot TWICE (sorry, I don’t know why, but there appears to be some “Voodoo” at play here. We do it because it works!) TWICE (sorry, I don’t know why, but there appears to be some “Voodoo” at play here. We do it because it works!), try the office apps again to confirm the fix worked.
If you want to first confirm that access rights are a problem this article describes how: http://www.windowsecurity.com/articles/Why-Applications-Dont-work-standard-users.html

Access Rights FYI: How to Understand Those Confusing Windows 7 File/Share Permissions How to Understand Those Confusing Windows 7 File/Share Permissions - How-To Geek

How do I restore security settings to a known working state? - How do I restore security settings to a known working state?
If none of the ideas above solve your problem, try the suggestions in this tip:
If that doesn’t work, sometimes the problem has been that Windows has had problems granting the right acces to files,folders and the registry. The following tips provide some workarounds.

Take Ownership of Files / Folders - Add "Take Ownership" to Explorer Right-Click Menu in Win 7 or Vista - How-To Geek
How to Take Ownership (Permission) of a File or Folder Manually in Windows? [Guide] How to Take Ownership (Permission) of a File or Folder Manually in Windows? - Tweaking with Vishal
How to Take Ownership (Permission) of a Registry Key in Windows? - [Guide] How to Take Ownership (Permission) of a Registry Key in Windows? - Tweaking with Vishal
If you are technically adept, you can try this fix.
Solving setup errors by using the SubInACL tool to repair file and registry permissions - Solving setup errors by using the SubInACL tool to repair file and registry permissions - Aaron Stebner's WebLog - Site Home - MSDN Blogs If that doesn't work, try running an app as admin and entering the product key.

XP Run as admin - Use 'Run As' To Execute Programs As Administrator
Win 7 5 ways to Run As Admin https://www.sevenforums.com/tutorials/11841-run-administrator.html - 5 ways to run as admin In Windows 7, even when you are logged in as administrator, UAC no longer gives you “Full” administrator rights. To get all of the access you now also have “run as administrator”
It appears there is an error where your userid is not being allowed to update the activation information.
What you need to do is "runas admin":
· Go to the start menu and find the program icon you want to start

• <Shift> <Right Click> on it
• Select “Run as …”

If that doesn’t work try this:
· In the start menu, right click on the shortcut for any Office app, select “RunAs Admin”
If runas does not appear, right click and drag the shortcut to the desktop

• create a shortcut on the desktop.
• Right click on the desktop shortcut,
• runas admin should be there.

Activate the application/office:
· 2007 Office button / 2010 File tab

• Help
• Click on “Activate the Application”
• Follow prompts to enter product key
• Close the app
• Restart app normally

Run a Program as an Administrator in Win7 - Run as Administrator
Why “Run As Admin” when logged in as Admin - Why does my computer say I need to be administrator, when I am?
What is 'Run as Administrator' in Windows 7?user accounts - What is 'Run as Administrator' in Windows 7? - Super User
XP Run as admin - Use 'Run As' To Execute Programs As Administrator
If that doesn’t work, try rebooting into Clean Boot mode (with networking) to do the install/activation.

How to trouble shoot a problem by performing a clean boot in Windows Vista or in Windows 7 - How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7 Note: You can’t do install in Safe Mode, installer service is not running

Msconfig.exe – How To Use the System Configuration Tool & All its Awesomeness! - How To Use the System Configuration Tool & All its Awesomeness! | 7 Tutorials Start Win7 in safe mode - Start your computer in safe mode - Please let us know if works or not. 310353 (How to configure Windows XP to start in a "clean boot" state ) How to perform a clean boot in Windows XP
281770 (How to perform clean-boot troubleshooting for Windows 2000 ) How to perform clean-boot trouble shooting for Windows 2000
267288 (How to Perform a Clean Boot in Windows Millennium Edition ) How to perform a clean boot in Windows Millennium Edition
180902 (How to Start a Windows 98-Based Computer in Safe Mode ) How to start a Windows-based computer in Safe Mode
Note: You can’t do install in Safe Mode, installer service is not running

How to start the Windows Installer service when system services are not loaded - How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7 If you run a Setup program without starting the Windows Installer service, you may receive the following error message:
The Windows Installer service could not be accessed. Contact your support personnel to verify that the windows Installer service is properly registered.
The Windows Installer service does not start if you clear the Load system services check box in the System Configuration utility. To use the Windows Installer service when system services are not loaded, you must start the service manually. To do this, follow these steps:
1. Click Start , right-click Computer, and then click Manage. If you are prompted for an administrator password or for confirmation, type your password, or click Continue.

1. In the console tree, click Services and Applications, and then click Services.
2. In the details pane, right-click Windows Installer, and then click Start.

FAQ about Office Activation Wizard 2007 2010 - Frequently asked questions about the Office Activation Wizard and about reduced-functionality mode in 2007 Office programs and in Office 2010 programs

Try these:

SFC /SCANNOW Command - System File Checker
Complted, "Windows Resource Protection did not find any integrity violations"

Disk Check
Completed, no errors

Repair Install

Filling in your system specs would help.
How much disc space is free for the instillation.

Hi eZak,
I don't now how to help you technically but,
how about inspecting your installation CD/DVD? Is there scratches on it. If you are not sure, try to copy all of its content to a folder in your HDD, and see if it is successfully done. You can even try to install it from there.