CF-51 artifacts and locking up

I have a CF-51PFVDEBM that has artifacts when you boot up and when you run programs it locks up. They come and go. I have swapped hard drives with another CF-51, but the problem doesn't move to the new one. The frustrating issue is sometimes I boot up and it is fine. Artifacts may be a strong word, it is actually 6-12 pixels that are different colors and it is the same pixels every time. This machine has been converted to a core 2 duo CPU. I used Arctic silver, cleaned the heatsink, and made sure it was seated correctly.

Anyone have similar problems and how did you fix it?

 

Description: Intel Core Duo T2500 2.0GHz (Centrino), 15" UXGA, 512MB, 80GB, 128MB VRAM, 56K, 1 Gb Ethernet, Intel 802.11a+b+g, COMBO drive, FDD, WIN XP SP2, TPM1.2

Your Mk3 video card may be going out, or it maybe overheating. But since you have checked your thermal paste it should be fine. Did you do that just on the CPU or did you do it for the GPU also?

 

I would try another RAM module,


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I agree to try ram first, then check the heatsink on the GPU..

 

I did swap out the RAM and nothing changed. The GPU overheating has promise, but where is it on the board and how do you remove the heatsink. Are there pictures or a diagram someone can post or link?

 

Panasonic Toughbook CF-51 Laptop Motherboard DL3UP1422BAA + | Computers/Tablets & Networking:Computer Components & Parts:M | JPEGbay.com

This is the Mk3LL motherboard, couldn't find a good shot of the MK3 motherboard. The GPU appears to be above the ram slots. So it looks like you will have to split the case to get to it.

 

I have never split one. Does the GPU use the case as the heatsink? Looks like it is using foam as a conductor, what would you recommend to replace that foam piece if mine is bad?

 

As Ador said, Your video card is going south. It can not be fix by just replacing the thermal pad. You need to reflow the chip itself.


ohlip