CPU cooling issue (on fire!)

Hey guys, I was just cleaning out the dust that had built up in my sister's laptop and after placing the heatsink/copper back onto the cpu and into the laptop it has been at around 80 degrees celsius! It's a core 2 duo running 2.0ghz and I know for a fact it should idle around ~45 in a laptop. But its idle temp is 63! I don't get it. Even after replacing the thermal paste ... I did use the thermal paste from an old parted out laptop because I didn't have any AS5 left since my last build. Is that the reason? I seriously doubt it...

Some one help me please!

 

I would hazard a guess and say it was a thermal pad that was used not paste so the paste is not making correct contact. Either that or you forgot to plug the fan back in lol.

 

I always love posts that start CPU+Fire

1. Make sure that the CPU and heatsink are seated properly

2. Never reuse thermal compound. Once its been cooked once its not good anymore and will never give you a good application. Go get some new paste and re-do everything. The temps should go down almost instantly.

 

Thanks guys, I've downloaded other apps to measure my temps, I'm stressing with orthos right now and its max temp is 74 degrees @100% load. I am also now undervolting it now. I was sooo afraid because I've never come across cpu temps above 75 in my life lol.

I was planning on just leaving the old thermal paste on there but then I read the 80 degree idle temps lol! So I thought the thermal paste was messed up. Then I looked for my AS5 and I found out that I ran out. So then I went ahead and used my old laptop's thermal paste... Its working ok right now but I will re-apply AS5 when it comes in from newegg with my next computer project.

Thanks anyway guys, I was really freaking out!