Gateway laptop GPU overheating

I have an old laptop that is acting up. I cleaned out the inside and I applied new thermal paste to the CPU. The GPU had a thermal pad on it. After reassembling the laptop it seemed to run a little better but when watching videos the lag comes back. It's lagging doing basic tasks like writing this. I don't have a sensor for the GPU onl the CPU. Does this sound like a GPU issue? Does the pad loose conductivity and need to be replaced?

 

Pads are poor thermal solutions by default. Just writing a thread response should not cause excessive lag. A quick question is the fan running at high speed while you are just typing the response? This assumes when the laptop does heat up that the fan(s) are running properly.

 

The fan runs, but if my memory serves me correctly, it used to sound more powerful. Do they get weaker over time? I actually have a second laptop that is the exact same except for the CPU. I think that I might try pulling the fan off of it and swapping it.

The pattern is the laptop runs fine and feels smooth for about 30-45 minutes and then the lag starts. It especially is bad whenever I run anything with video. It's only after I've been running it a bit that it will struggle to do basic tasks. I feel like it has to be related to heat somehow because it doesn't do it when the computer first boots up. The fan was just cleaned, I pulled the entire motherboard out so I know it's not a blockage/dust issue.

Thanks for you help.

 

Which laptop, I mean what model?

 

It's a Gateway EC1454u. It's a cheap computer but I want to get it working so I can learn how to fix them. It might be a lost cause but I learned a lot pulling the whole thing apart. I'm running Ubuntu 14.04.

 

My concern is the GPU in that you say there is no sensor. In reality there has to be for the system to know the GPU is heating up enough for the fan to kick in. If this is a single fan system it could be where the pipe heats up enough to cause the CPU to get warm but only then kicks the fan onto low, if at all.

Also with Intel GMA 4500 graphics being tied to internal ram a slowdown of the systems resources will slow the graphics as well.

 

Do you know if there would be a way to force the fan on full every time I turn on the computer? I don't mind a loud fan. I also don't care if the computer dies. It's pretty much useless the way it sits now. I've gotten a ton of use out of it.

 

Not too familiar with the model. You could try the software "Speed Fan".

 

I might try swapping the fan and pad this weekend and see if it makes a difference. I'll try speedfan too on windows to test it but I use linux for the most part. I don't think they have a version of speedfan for linux. I'll give it one more go and if not I'll sell it for parts and buy a new one. Thanks for you help.

 

Soo how was it going on?
Does it work? I also want to have my 7811fx run the GPU fan at full speed for all the time..

 

I tried my best to fix it and I think that I must have damaged something. I ran the computer hard for years. I didn't take care of it the way I should have. I sold it for parts on Ebay. I bought a Samsung Ativ book 5 with an i5 for $250 on craigslist. It's very fast. I can't tell the difference between the resolution on this and my Zenbook. I'm going to pick up an ultra-portable to replace my EC eventually. I will probably sell the Zenbook.