The desktop is running MS Windows Vista Home Premium. User reported no problems with desktop after last use. Currently, when the desktop is powered on, it will boot to the MS Vista load prompt and power off automatically under all boot options. I have changed out the power supply and CMOS battery. An attempt to load OS from CD resulted in auto power off at Starting Windows prompt. Any assistance is requested and appreciated.
Remove memory sticks - Boot with one, then teo, etc