If you are trying to install xp, you have format the hard drive prior installation. If you trying to reinstall Vista, check your hard drive for bad sectors. Make sure that the installation CD/DVD is readable (just try to copy all content on your hard drive).
you reformat it
For Windows XP, Vista, and 7, the "logon screen" or Welcome Screen. In Windows 8, it's the "Lock Screen".
In screen savers
Alt+Enter, if your Windows supports it.
nope
Many companies are offering touch-screen laptop computers, for use with the touch screen capability of Microsoft Windows 8. These companies include Google, Dell, Toshiba, Lenovo, and Acer.
C:\Users\your - userID\Desktop
You can assume the Power On Self-Test (POST) has produced no problems.
I'm thinking your question is How do you reformat a hard drive? If so you can do this lots of ways it mostly depends on what windows program you are running......but all of them if you boot from the CD you should be given that choice in setup or you can format from the c:/ in dos "c:/format then follow the on screen prompts.
Depends what light you are talking about. Lights on a laptop can vary. Usually, a light which will turn off when the laptop is still on is the loading light, maybe battery light, also wifi light.
it depends on what OS you are using but if you are using Windows just right click the main desktop screen and scroll down to screen resolution for windows 7 and for xp go to control panel and it will be under display options.
No. You don't need a touch screen to use Windows 8. It will work just like a regular PC or laptop.