dell 8400 desktop help

norty
09-23-2005, 02:23 PM
I have a Dell 8400 desktop and I can power it up until it gets to the login screen and then it turns off for no reason. I had a dell tech already come out and replace the motherboard. That fixed it for about a week and now its having the same problem. What do you think could be causing this? I was thinking the power supply.

After it turns off i still have power to my keyboard and mouse and such but i cant turn it back on for a few minutes and then when I do it turns off by itself again. Help?

dontlike_tv
09-30-2005, 09:33 PM
power supply test it.