The 1603 error is a general system error that can sometimes occur when installing a new program or software package on your computer. By changing the account permission settings on your computer, you can eliminate the 1603 error so that you can successfully install your software.
Right-click on the "C:/" drive, your main computer hard drive, and click "Properties."
Go to the "Security" tab and click "Add."
Enter "SYSTEM" as the name and click "Add" and click "OK."
Go to the permissions section and check off the "Full Control" box next to "Allow."
Click "Advanced" and check off the box next to "Replace permission entries on all child objects with entries shown here that apply to child objects" and press "OK."