Any of the above items may be the source of your problem. First of all, you may not have enough available RAM to boot the installation media. The cause of many system hangs is hardware incompatibility. Section 1.8 in the last chapter presented an overview of supported hardware under Linux. Even if your hardware is supported, you may run into problems with incompatible hardware configurations which are causing the system to hang.
System reports out of memory errors while attempting to boot or install the software.
This item deals with the amount of RAM that you have available. On systems with 4 megabytes of RAM or less, you may run into trouble booting the installation media or installing the software itself. The solution to this problem is to disable the ramdisk option when booting the install media. See your distribution's documentation for details. If your system hangs, and none of the explanations in the previous section seem to be the cause, try disabling the ramdisk.