Sign in with
Sign up | Sign in
Your question

Bad PSU? Green LED on MOBO.

Last response: in Components
Share
September 20, 2013 1:51:05 PM

I was about to start switching over an old P4 system to a new power supply--in order to get some files off of the HDD--because I assumed the PSU was dead. There is no action at all when hitting the power button.

Now that I have the case open I can see that there is a little greed LED that lights up on the MOBO when I plug the PSU into the power source. Is this evidence that the PSU is not bad? There is still no function at all from hitting the power button.

Also, I'm certain that the CMOS batter is completely dead. In doing a search I saw that some people have experienced systems that won't power on or boot with a dead CMOS battery. Any chance of this?

More about : bad psu green led mobo

September 20, 2013 2:03:03 PM

Hi,

Quote:
Now that I have the case open I can see that there is a little greed LED that lights up on the MOBO when I plug the PSU into the power source. Is this evidence that the PSU is not bad? There is still no function at all from hitting the power button.


No, A bad PSU might light up the led, but still the computer might not power on.

Quote:
Also, I'm certain that the CMOS batter is completely dead. In doing a search I saw that some people have experienced systems that won't power on or boot with a dead CMOS battery. Any chance of this?


You right, with the new UEFI bios, I found out that the mobo would not power on.
I would say pentium 4 mobo and older would still boot, but would lose time and date.

m
0
l
!