If you are using a Laptop, then connect it to the AC power outlet before the installation.

Check your Hard Disk Drive for enough disk space were the Windows is installed (most probably in C: partition).

What precautions should I know before installing the Windows Service Pack 3? Note: If you found that Service Pack 3 installed on your computer then you are up to date and no need to download and install the SP3. Simply by Clicking Start, right-click My Computer, and then click Properties. How to check which Service Pack version currently I have on my Windows?

When you have at least Service Pack 1a (SP1a) or Service Pack 2 (SP2) installed.

If the value that corresponds to Processor starts with ia64 or AMD64, the computer is running a 64-bit version of Windows.

If the value that corresponds to Processor starts with x86, the computer is running a 32-bit version of Windows.

In the navigation pane, locate Processor under Item in the details pane.How can I know which Windows Version my computer has? Service Pack 3 is compatible only with Windows XP 32-bit, hence for Windows XP 64-bit you can have only Service Pack 2 running were you will still receive latest updates for this version till April 8, 2014. Which Windows XP version supports Windows Service Pack 3? The latest Service Pack available for Microsoft Windows XP is Service Pack 3.

What is the latest Service pack available? A Windows Service Pack 3 is a software update package (in our case the software is Windows XP) that enhances the current Windows version and also fixing any bugs or issues in the operating system as well as increasing the system security and enhance the performance.

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