Desktop won't boot-Blinking orange led in unison w/ blinking green h/d led

Status
This thread has been Locked and is not open to further replies. Please start a New Thread if you're having a similar issue. View our Welcome Guide to learn how to use this site.

geno368

Thread Starter
Joined
Apr 30, 2006
Messages
295
My sister has a Dell Dimension 5100 w/XP Prof., 1MB Ram, Pent 4 @ 3.2 ghz. All of a sudden it won't boot. When you plug in the power, the power switch led blinks orange in unison with the h/d green led.
This is what I have tried:
I pulled the power supply 24p connector and shorted the black wire to the green wire and the fan then came on..so I figure p/s is ok?????
I then removed the modem card and the video card as well as the memory and all drive connectors. Still same response. What do I need to check? Motherboard bad??Thanks
 
Joined
Sep 29, 2008
Messages
513
The power supply may be deteriorated to the point that there is not enough power to run the CPU, but it can run the fan. Better testing of PSU would be required. Or put different PSU in and see what happens. If it still doesn't work, it could be the CPU or motherboard.
 

geno368

Thread Starter
Joined
Apr 30, 2006
Messages
295
how do I check the output of the P/S? I have a volt/ohm meter
 

crjdriver

Moderator
Joined
Jan 2, 2001
Messages
40,843
Just because a fan comes on really means nothing. The quickest way to test a pw supply is to swap in a known good unit.

You have three different voltages in a psu; 3.3V, 5V, and 12V. You could have one fail and the fan still comes on.
 

crjdriver

Moderator
Joined
Jan 2, 2001
Messages
40,843
BTW even shorting the psu and using a volt meter does not test the system under a load. It only shows the no load voltage. It could be very different when attempting to pw ON the system.

One last item. Modern dells use standard atx pw supplies however older ones use a proprietary unit. Check with dell to see what type you use. FWIW the proprietary unit uses the same connector so you cannot tell by the atx connector.
 

geno368

Thread Starter
Joined
Apr 30, 2006
Messages
295
I have a damaged X8543 front panel on this system if anyone has one for sale. One of the two USB ports is damages. I also need to know if the damaged USB port on this panel could cause the blinking amber light and no boot. I have replaced the PSU already. If the port is shorted to ground, would it damage the MB?
 

geno368

Thread Starter
Joined
Apr 30, 2006
Messages
295
Solved.....I finally found a front i/o panel assembly and replaced the shorted one. I replaced the cmos battery I had pulled and...it's back to normal....Thanks for all the help
 
Status
This thread has been Locked and is not open to further replies. Please start a New Thread if you're having a similar issue. View our Welcome Guide to learn how to use this site.

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

As Seen On
As Seen On...

Welcome to Tech Support Guy!

Are you looking for the solution to your computer problem? Join our site today to ask your question. This site is completely free -- paid for by advertisers and donations.

If you're not already familiar with forums, watch our Welcome Guide to get started.

Join over 807,865 other people just like you!

Latest posts

Staff online

Top