A problem occurred while installing LINUX for Peng's notebook today!

A problem occurred while installing LINUX for Peng's notebook today! -- Linux general technology-Linux technology and application information. For details, refer to the following section. Today, we helped our colleagues install LINUX in their laptops. An error occurred.
1 UBUNTU8.04. After installation, you can enter the system, but cannot shut down the machine. Symptoms: after shutdown, a text interface will remain unchanged. It won't work after a long wait. You can only turn off the power supply.
2 In UBUNTU. The system does not automatically install the laptop's Atheros5007 wireless NIC Driver. I can see on the Internet that I can install a software and then install a driver under WINDOWS. Because my notebook is not here for me, I cannot practice it now. I also want to ask some suggestions from my friends who wish to solve it successfully.
3. The host cannot be shut down. The wireless network card cannot be installed, so I decided to change the version and install the Red Flag 6.0. But the system cannot be installed. It gets stuck as soon as it reaches that big 6 character. It seems like it is dead. Sometimes it does not crash. The starting flash is always on. At this time, I press CTRL + ALT + F1 to log on to the text mode. Not every time I start the system, I can log on to the text mode, sometimes it gets stuck at the top six characters. Press CTRL + ALT + F1. Why. Shutdown also causes UBUNTU problems.

Hope your predecessors can answer this question. Thank you.