Cleaned CPU Fan, now monitor won't work, [Solved/Closed]

bokentoe 3 Posts Tuesday May 21, 2013Registration date May 22, 2013 Last seen - May 21, 2013 at 08:36 AM - Latest reply:  shiv
- Aug 19, 2015 at 09:10 AM
My PC has been shutting down randomly the last few days telling me that it shut down for "excessive environmental damage" to ensure my pc didn't fry. I backed everything up on my PC on an external hard drive to make sure if it did fry I wouldn't lose anything.

Then I figured the problem might be the fans cause I don't ever clean the insides and it's probably very dusty (doesn't get great air flow out of the pc case). I took off the CPU fan and cleaned it really well.

When I put it back together however, the monitor said no signal. One thing I have noticed, is that it seems as though the CPU is glued to the fan, which makes re-attaching the CPU to the white socket on the motherboard very tricky. I can only guess when I think it's in and tighten everything up around it.
Problem is still the monitor, on the proviso that I've put the CPU back into the socket correctly, the monitor won't get a signal. Also, the PC restarts itself every 20-30 seconds too. Power cord seems to work cause the pc turns on etc.

Any suggestions for a fix at home?
please help!
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Best answer
jack4rall 6505 Posts Sunday June 6, 2010Registration dateModeratorStatus December 30, 2015 Last seen - May 21, 2013 at 01:38 PM
Thank you

Try this 1.

1) If you have placed the CPU FAN without removing the old thermal compound

and applying a new one on the processor then remove the old thermal

compound from the processor and make sure that your CPU FAN is also clean

without any thermal compound.

Now freshly apply some thermal compound in the middle of processor and

fix the CPU FAN properly.

2) Regarding the display issue, remove the RAM from the slot, clean it and place

it back properly or try another slot.

3) If the problem still exist then if you are having two RAMs then remove it,

place only one RAM and check if you are able to start your laptop without any

issue. If the problem still exists then try the above procedure with the other RAM.

Check your RAM also. Even bad RAM will result such problems.

Good Luck.

Thank you, jack4rall 1

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bokentoe 3 Posts Tuesday May 21, 2013Registration date May 22, 2013 Last seen - May 21, 2013 at 03:39 PM
Thank you
Thanks for that.

I tried the RAM approach, taking it all out, cleaning it, putting 1 in another slot, everything you can think of with the RAM I've tried and no luck.

With the CPU though I do have a question, how do you take it off? I unhooked the fan, and it looks like the CPU came off with the fan however, I've tried separating the two, but they're stuck to each other pretty good. There's no way I can take the two of them apart. Is there a trick that i'm missing in separating them? Getting the thermal compound and adding more I can do, but not if they're not already separated.

Suppose the other point too is, if the power unit itself is fried, does the pc still start? I've had problems with the monitors in the past pc's and it was the power unit that had broken. I just don't want to replace it if it isn't that.
The PC doesn't stay on you see, after 20 seconds it turns off, then automatically starts again by itself and does the whole thing all over again.
jack4rall 6505 Posts Sunday June 6, 2010Registration dateModeratorStatus December 30, 2015 Last seen - May 22, 2013 at 05:42 AM
Try this 1
Sometimes it does happen, when you try to remove the Cooling FAN you will see the CPU coming along with it. There will be a locking system near the Socket where it locks the CPU to hold it firmly. So are you sure you have placed the CPU correctly along with the heat sink ? Because in order to place the CPU in the socket, you need to unlock it first and the place the CPU in the socked, lock it to hold it firmly. Then we will be placing the heat sink.
Click on the below image to see how it looks like
Its the old thermal compound which exists between your CPU and the head sink. Need to be careful when removing the CPU from the heat sink. Try to slide the CPU to the heat sink ends.
You need to be extreme careful when doing this. Make sure that you don't bend the pins.
Even when you notice the SMPS FAN rotating, there might be problem with its output voltage.
We need to check the SMPS output voltage to make sure that its working properly.
Remove all the internal components like Hard drive, DVD-Drive and check if you are able to get the display.
Good Luck
Thank you
Thank you so much.. I fixed my lap by replacing the rams.. now my lap works great..
bokentoe 3 Posts Tuesday May 21, 2013Registration date May 22, 2013 Last seen - May 22, 2013 at 08:58 AM
Thank you
yeah, that's where I've gone wrong with putting it back together again. Because the fan is connected to the CPU, I can't lock the CPU back into the socket. I have bent some of the pins, but I fixed that problem.

I think i'll give it to a friend who has built PC's for a living in the past. He'll know how to rebuild that part of the PC without causing further damage (I hope). It'll cost a lot less of money and hassle doing it that way I think.

thanks for the help Jack! certainly learned something new from you! Will let you know whether that works or not. If not, maybe just buy a new CPU.

Increasing the speed of the PC other than buying a new chip, I guess would be the graphics card eh?
Thank you
ive found a simple solution , when you plugged the hdmi cable from the pc to clean it , make sure you plug it in the correct port that you plugged it in before , there might be more than 1 hdmi port . I did this and it worked for me