Computer turns off after 0,5 seconds after applying thermal compund to the CPU

[Dave_7]

So my processor Intel I5 Sandy Bridge was always super hot (98 C) and I decided to buy some thermal compund..

After I applied it, the computer won't start.. I reopened the case and saw that I probably applied too much thermal compund because some of it was on the motherboard and even in the cup surface.. I cleaned everything with glass cleaners and air compressor and it still doesn't start.. Now it only starts for half a second and it turns off..

Is my computer done? What I can do? Because I need it to work and I'm desperate now. I was thinking to buy a low cost laptop in the emergency.

I forgot to add that one of the lock pins of the heating is broken so only 3 of them works bit it's still locked in a decent way.

Also, I forgot to clean the old thermal compund before applying the new one..

 

[smackers_12]

So my processor Intel I5 Sandy Bridge was always super hot (98 C) and I decided to buy some thermal compund..

After I applied it, the computer won't start.. I reopened the case and saw that I probably applied too much thermal compund because some of it was on the motherboard and even in the cup surface.. I cleaned everything with glass cleaners and air compressor and it still doesn't start.. Now it only starts for half a second and it turns off..

Is my computer done? What I can do? Because I need it to work and I'm desperate now. I was thinking to buy a low cost laptop in the emergency.

I forgot to add that one of the lock pins of the heating is broken so only 3 of them works bit it's still locked in a decent way.

Also, I forgot to clean the old thermal compund before applying the new one..

What thermal compound did you use? Did you plug the heatsinks fan back into the motherboard header? SOme thermal compounds are conductive and having them spilled on the board could have ruined it

 

[Dave_7]

It was some thermal compund specifically build for cpu's..

Yes the heat sink is connected

I tried to unplug and plug again everything but still nothing.. He turns on for half a second and then turn off.

Do you mean that my computer is unusable now?

 

[smackers_12]

It was some thermal compund specifically build for cpu's..

Yes the heat sink is connected

I tried to unplug and plug again everything but still nothing.. He turns on for half a second and then turn off.

Do you mean that my computer is unusable now?

What does the actual tube of thermal compound say on it; is there a brand name or something? Are there any beeps when you try to turn it on?

 

[as123]

At what point does the computer shut off. After loading bios or before.

 

[kapitalistas]

so now you learn from own mistakes. may help wipe old termalpaste apply some new and try to boot,but if a fan not tide enough to cpu its not ok your get overheating problems again.

 

[Dave_7]

The tube says dissipating compund.

The computer shut off after 0.5 seconds, no time to go into the bios

 

[smackers_12]

No beeps or anything?

 

[kapitalistas]

did the cpu fan spins.

 

[Solandri]

After I applied it, the computer won't start.. I reopened the case and saw that I probably applied too much thermal compund because some of it was on the motherboard and even in the cup surface.. I cleaned everything with glass cleaners and air compressor and it still doesn't start..

Oh boy...

You do not smear on a bunch of thermal paste. You use as little paste as possible.

The paste is not supposed to be the main conduit for heat from the CPU to the heat sink. If you put too much on, it'll make the CPU run hotter, not cooler. The best heat transmission is from the metal heat spreader on the CPU directly to the metal base of the heat sink. Metal on metal.

The top of the CPU and bottom of the heat sink are not perfectly flat. When you mate them together, there are tiny microscopic bumps and crevices full of air. Air is a terrible conductor of heat. The role of the paste is to fill these tiny gaps and provide (slightly) better heat transference than air. You do not want a sandwich layer of paste sitting between the CPU and heat sink. You only want paste in these little microscopic gaps. Not blocking metal on metal contact.

So with that in mind, the proper way to apply thermal paste is to put a tiny dab of it on top of the CPU. Some people use an old credit card to scrape it evenly over the top of the CPU (and scrape off the excess). But I just put the heat sink on and squish it around until I've squeezed all the excess off the sides. Remember, you want to maximize the metal on metal contact area. So squeeze out as much paste as you can.

If the thermal paste has gotten into the CPU's socket, you may have shorted out some of the contacts. Some paste is corrosive, so you may be looking at a major cleaning/repair job too. Hopefully the problem is that you just have too much paste.

 

[Dave_7]

No bips or anything like that

 

[Dave_7]

I removed most of the thermal compound and now the PC starts for some time and then he turns off and he continues to turn on and off.

He stay turned on for like 10-15 seconds. But the monitor doesn't receive any signal.

What I can do? Is there something I can do?

 

[smackers_12]

You said your heatsink is broken? it could be shutting itself off now to protect itself. If there is any thermal paste in the socket i doubt you will get it out without damaging the pins and it probably wont work with it in there, you can use very pure isopropyl alcohol to clean the thermal paste off the board but make sure its dry before applying power and do it while the board is unplugged

 

[Dave_7]

Yeah the heatsink is broken.

I also saw that in the space where you put the CPU, some pins are folded.
And there was some thermal compound in the CPU pins and Motherboard..

If the processor is dead because of that I prefer to build a new computer with the latest stuff..because I was already thinking to getting a new one even before this one stopped working..

 

[smackers_12]

If some of the pins are folded you can very carefully try to fix them but without getting the thermal compound out it wont work. repairing an lga socket is not easy but can be done (https://www.youtube.com/watch?v=HsgodSeRdWA) The pc might not be dead so its worth a try if your up for it