Freqent computer hangs

[tadiguma]

I have two computers using windows 98 OS that hangs frequently.
The first one hangs less than 10 minutes or less after the OS is loaded. It gives a 'DPMS OFF MODE' and hangs. The 'ctrl-alt-del' and the power buttons don't work so I have to switch the power off from the mains.
The second machine hangs several times during the day and I have to reset using the power or reset buttons on the computer.
Please advice on what steps to take.

 

[KimberTech]

Have you run an antivirus program to make sure they arent infected?
That would be my first step. The more I learn, the more I realize how much more there is to know!
Kimber

 

[mainegeek]

Try disabling your power managment settings in the cmos setup.

 

[2ndtonunn]

I agree with mainegeek the problem on machine 1 is most likely to be Power management in BIOS.
With Machine 2 what are your system resouces running at?