New System Build Keeps on Rebooting

[buddhatb]

I came across a problem during my system build. I was able to install windows xp pro fine in the beginning. However when I tried to install a second hard drive or add another stick of ram, the system will just keep on rebooting. I removed the second HD and extra stick of ram and cleared the CMOS and the problem still exists. Sometimes it will POST before rebooting, other times I can get into Windows before it will reboot, and then a majority of the time it will just keep on rebooting after a few seconds.

Computer specs are below. Only thing I have installed at the moment is the Vid card, HD, 1 stick of RAM, DVD Burner, Floppy drive. I have upgraded to the newest BIOS and manually set my ram voltage to 2.2V.

Anyone have any ideas on what the problem is or what is causing it to keep on rebooting?

Thanks ahead of time.

 

[lenjack]

Are you overclocked?

 

[buddhatb]

Originally posted by: lenjack
Are you overclocked?

System is not overclocked.

I am trying to get my system running stable at default speeds so I can start installing my remaining hardware and software. This is a new system build.