Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to keep your computer tuned up and running fast [title] Note : [step] These steps were written assuming that the user is running the windows xp or windows vista operating system. [title] Assuming that your computer is on, check first to see what type of anti-spyware/anti-malware/anti-virus software is currently installed. [step] Most reliable software will show a small icon on your taskbar (bottom right of your screen).

Ending1: [title] If your computer is not on, check the " tools " menu. [step] Scroll down until you see " software " and click it. Ending2: You can also check for such software by clicking start] all programs and looking through the list. [title] Do a quick search on the software you have installed. Ending3: If it does not show any icons, check right first; you will see nothing in this window. If it does, please know that it may or may not show an icon. Ending4: If you don't see it, the computer is not operating; see warnings. [title] Start your computer up and check for updates.

Answer format: ending1/ending2/ending3/ending4