Easy upgrade from windows xp to windows 7

What tool can discover and report computer errors and conflicts that occur when you first turn on a computer and before the operating system?

Sam is a data analyst at an advertising firm. he often uses a spreadsheet that contains media ratings details. he would like to filter the spreadsheet data based on different filter criteria. which operators can he use to specify the combination of filter criteria? sam can use the ( blank ) operators to specify a combination of filter criteria.

What characteristic of long period comets suggest they come directly from the oort cloud?