Unable to reinstall CPU

Hewlett-packard Hp pavilion elite m9350f...
February 18, 2010 at 04:06:57
Specs: Windows Vista, AMD Phenom X4 9950 2.6 GHz
I recently had a tech at Fry's Electronics install a new AMD Phenom 9950 2.6 GHz X4 CPU. The factory OEM, AMD Phenom X4 9550 2.2 GHz CPU was replaced with the one mentioned above. When I brought the PC home and started it up, the monitor immediately displayed that the CPU fan was not working and the PC shut down after a few seconds by default. I'm unsure at this point if it is a BIOS, improper connection, fan, wire, or incompatability issue. I located the CPU fan wire connector, and according to the motherboard stamp, the CPU fan connector was clipped in the correct place. It looked as if the connector wasn't pushed down completely seated flush with the motherboard, so I tried to access the connector, but wasn't able to reach it. I tried to remove the media backup and hard drive assembly, but I wasn't able to remove it due to some hidden clips or fasteners somewhere. So as a last resort, I unclipped the CPU fan/heatsink and lifted it out to attempt to access the CPU fan connector from that angle. Unfortunately, this removed the processor along with the fan since it was pasted.
My question, is there any safe way to reinstall the CPU with the fan/heatsink pasted to the processor without bending pins with correct alignment or am I doomed? I don't have thermal paste, nor any experience installing CPUs. I don't know if I should use this PC as a lab rat to test my lack of skills for fear of bending pins and damaging the processor.

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February 18, 2010 at 04:52:49
May be the video will help. http://m.youtube.com/watch?desktop_... it's not a good idea to re-use old thermal paste but try it if the thermal paste still good. If it's post fine go into bios a check cpu temp. Did u check cpu support list for your system? Some system's require bios update to full support newer cpu's.


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February 18, 2010 at 09:24:41
The CPU is NOT supposed to come out with the heatsink. Thermal paste is not an adhesive (unless the "tech" used the wrong type) & only a tiny dab about the size of a grain of rice should have been used. My guess is he used way too much. Regardless, the CPU is going to have to be separated from the heatsink, both surfaces (top of CPU & bottom of heatsink) will have to be thoroughly cleaned of all traces of the used paste & a fresh dab of paste will have to be applied. And make sure it's done correctly this time. Follow these instructions regardless of the brand of paste you use:


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March 4, 2010 at 15:14:10
Thank you so much for your replies. The tech applied way too much thermal paste (glue perhaps?), to the CPU and it stuck on there like a rock. It was very difficult to get the two apart. A few of the pins were slightly bent on the CPU but I got them straightened out and the CPU is installed and works fine. I had the tech redo it. Well, the tech talked me into buying a Cooler Master HAF case and upgrade the CPU heatsink/fan to a Cooler Master V8. The fan has a four pin molex connector and the HP motherboard is three pin. The PC wouldn't start with the new fan connected, so he tried splicing, dicing, mixing and matching the four wire leads from the fan, but the HP motherboard said, "no, no, no" to all of the above. Finally we had to plug the CPU fan into the case fan connection on the motherboard. The fan is constantly on, but it has a speed switch and it works fine. I also was forced to connect my old CPU fan to the original motherboard CPU fan recepticle to make it work. I still have to press F2 upon startup because the motherboard doesn't even recognize the original fan anymore, which is weird. BIOS doesn't allow any CPU fan settings changed and it's locked down tight. HP doesn't want their customers to get into the fan settings I guess.

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