|You have not provided enough information.|
Apparently presario cq42-357tu is a notebook computer.
"Operating system: FreeDOS "
Did your computer have XP installed on it when it was new ?
Technical support - HP Malaysia (Home support page)
Are you having (a) problem(s) with the computer ?
If so, describe your problems / symptoms, in as much detail as you can come up with.
Hardware problems - e.g. your hard drive or LCD display is failing or having a problem, or you're experiencing ram errors - cannot be fixed by re-installing software.
If your computer appears to be severely contaminated by malware, that can usually be fixed without you having to instal the original software installation or Windows from scratch.
Do you just want to re-load the orginal brand name supplied software installation or just Windows ?
Do you have Recovery disks (CDs or DVDs) that came with the computer, or Recovery disks that you made yourself by using a program supplied by the brand name and already on the computer ?
Do you have a regular Microsoft OEM XP CD ?