no!
The computer is running on the Windows operating system.
what are the running costs for a PC monitor on standby
Windows is the operating system on a Microsoft computer or an Apple computer running windows drivers. Without windows your computer would not work.
Standby effectivly shuts most of the computer down, but leaves it running (but you can't use it) Log off is closing your computer account, allowing others to use their accounts to access their data
To function as a server a computer must be running as a WINDOWS based server i.e windows 2000, windows NT, windows 2k3, windows 2k8 editions of server installed on computer the server could be Linux based as well.
No.
upgrade advisor
You should buy an upgrade version of Windows Vista however your computer if running XP is likely not to be powerful enough to run windows vista. You should run Microsoft Windows Vista Upgrade Advisor before upgrading as this will show you any problems your computer may have running Vista.
its pretty obvious
The IBM PC already existed, running MSDOS, before Windows was added on.
You can find information on how to reboot a computer that is running the Windows 8 OS online at the official Windows Microsoft website. You can also read the manual that came with the Windows 8 OS disc.
You can't. Your computer must be turned on and running to play music. You can turn off your monitor, though. ** Added to answer ** Some laptops allow you to do this and I believe it is handled at bios level. You would need to have a computer that offered this specific functionality. Jeffery Williams JWilliamsOH