Computer turn itself off after few seconds....

[tonie]

Hi, I have an AMD XP 1700 that uses an ECS mobo and that mobo doesn't work any more. So I switched my CPU to Biostar Pro. I assemble everything together and after bootup, one of the block to tighten the hs broke off so the hs fell off. After that, I re-attached the hs and from there on it automatically shut itself off after a few seconds but the power button is still on.

 

[AnonymouseUser]

This could be one of several things:

* Wrong FSB speed.

* HS isn't making proper contact with the CPU, or you don't have the thermal paste installed properly (if at all), which is causing the CPU to overheat and shutdown.

* CPU is dead (maybe the ECS mobo isn't?)

 

[tonie]

No, I don't believe the CPU is dead because I tested with another CPU which is my AMD 2500+ that I stated above. I also re-applied the thermal paste and I believe I installed it properly. The weird thing is that after it shuts off, I think the power of the computer sitll not but nothing is running.

 

[fishmonger12]

sounds like it's overheating. double check to make sure you used the correct amount of paste.

 

[tonie]

No, I don't think it's overheating because

1. I could get to the blue setting screen before the hs fell off.

2. After it fell off; I re-applied the thermal paste with AS5, it boot up for couple of seconds but nothing is on the screen and it shuts off after that.

 

[AnonymouseUser]

Remove the CPU and clean up all the AS5 (you may have gotten some AS5 on the traces causing a short). Reapply the HS and AS5, making sure that it is positioned correctly.

 

[tonie]

Yes, that's what I did when I changed the CPU to 2500+


Edit: The computer doesn't turn itself now anymore but I just don't see anything on the monitor. What can I do now?

 

[mechBgon]

Originally posted by: chizu
Yes, that's what I did when I changed the CPU to 2500+


Edit: The computer doesn't turn itself now anymore but I just don't see anything on the monitor. What can I do now?

It sounds like your 1700+ is dead from the overheating that occurred almost instantly when the heatsink came off. The symptoms (running fans & drives but no display) fit that diagnosis, and the fact that your 2500+ does work where the 1700+ does not work supports that theory. I would slap a 1.8GHz Duron in there and call it a day, if your mobo supports the 1.8GHz Duron.

 

[tonie]

The 2500+ doesn't work, it's the same thing as the 1700.

 

[mechBgon]

Then I would get a 1.8GHz Duron and a Shuttle AN35N Ultra First, look at the third and fourth heatsink photos on this page, though. Is that right on yours?

 

[tonie]

The page doesn't work, could you check it real quick please? Thanks

 

[mechBgon]

It is working for me. The important photo is also located here: http://pics.bbzzdd.com/users/mechBgon/heatsink1L.jpg

 

[aGreenAgent]

I did that once on a computer I was building. Man, I felt dumb afterwards.

 

[tonie]

I applied the hs properly, it's flat down to the cpu. I just tried to turn it on and the green light on the monitor is on but nothing on the monitor nor the keyboard.

 

[AnonymouseUser]

Have you got the 4-pin ATX12v connector* plugged in? Does your PSU even have this connector?

* Thanks mechBgon

 

[tonie]

Originally posted by: AnonymouseUser
Have you got the 4-pin ATX12v connector* plugged in? Does your PSU even have this connector?

* Thanks mechBgon

Yes, I have that connector but I don't think my motherboard has a port for that. And I have never used that in the past. Where do I plug it into if I don't have that port in my motherboard?

Edit: I am going to go to Fry's today and purchase a new motherboard to see if it will work. I'll get back with you. TIA

 

[tonie]

Alright, I bought the mobo today and it works fine with both CPU so I guess the conclusion is that my other mobo is messed up when the HS dropped. Thank you for all of you guys replied, I appreciated so much.