单项选择题 You have a computer that runs Windows Vista. You need to identify the hardware and software failures that have occurred over the past six months. What should you do?（）

单项选择题 You have a computer that runs Windows Vista. You need to ensure that the computer does not enter sleep mode when it is sharing media files. What should you do?（）

单项选择题 A co-worker uses a gadget from the Windows Sidebar feature on their computer. You examine your computer and find that the gadget is not on the list of available gadgets. You need to add this gadget to the Windows Sidebar feature on your computer. What should you do?（）