What this means is that if you are using Windows 7 without SP1 installed, you will stop receiving Windows Updates for your operating system as of April 9th, 2013. Windows Updates are your machine's first defense against malware; without them, all other forms of defense are futile. So, if your operating system is Windows 7, without SP1, then you need to get SP1 installed on your machine before April 9th because, without updates, your operating system will soon become a magnet for malware.
Read: Windows 7 RTM End of Support is Right Around the Corner
It should also be noted that this site does not offer malware removal services for non-supported operating systems; therefore,