How to change XP system?

Users questions: Haier my school computer (in 2007 in Anhui Province Rural Distance) is a red flag the original operating system installed, how change XP system? I use the following method of not, but I do not know where the problem? Please teach master. Some explanations: 1. Computer uploaded a reduction card. 2. I heard changed back to brush BOS, the BOS is not the BIOS? How to Brush? I heard there are risks, please explain. Here is my operation, please indicate the wrong place: 1. Boot - arise Haier press the HOME-Uninstall Recovery Card 2. Reboot - CD-ROM into the system (GHOST version), can be normal - indicating success - restart But not into the XP system is still the red flag system 3. Then, I COMS clear, repeat the above steps, the red flag system, also entered not only occurred "GRUB_", there is a cursor "_" flashing back in Brub , halo to halo in this step, this time is not what the system has entered The. Now my question is: 1. If you give all the re-partition the hard disk and then install XP, can not solve? 2. If the above one not, how to solve these problems, one purpose, into XP system? How? Thank you! ! I know this is trouble, but I also these points to when How much for how much, experts advise. Thank you.
Experts answer: would have the problem is not large, is to find your own problems. 2. I heard changed back to brush BOS, the BOS is not the BIOS? How to Brush? I heard there are risks, please explain. Do not need. Need to use bios the only one, the system changed Start from the CD-ROM. 1, the general number of the computer press ESC key can be changed. 2, you can enter the bios changes. I remember very much more specific, you can search for "boot from CD-ROM" 1. If you give all the re-partition the hard disk and then install XP, can not solve? Can! I have not used ghos t of the system. Concrete is not very clear, I suggest you use the tomato garden version of xp. Very good use. ** **- Start from the CD-ROM boot into the installation interface to select the automatic installation **- **- then you basically do not need operation. System to restart a process -. . . . System should you choose to safety Mounting location you can watch on-screen prompts such as c District Zoning District generally c e d areas to the 10G do. After a detailed look at the size of the hard disk after this step is basically not to operate. By the way, was also necessary to restart a light Set out to basically the end. Do not know do not quite understand. That's not quite clear. But I feel more than you will the Internet look. The desire to help you.
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