Pavilion ze5270 Overheating!! Help

My Pavilion ze5270 will be 5 years old in February!! It has served me well apart from the battery or the charger dying on me 3.5 years ago(still don't know which is broken but as I use my notebook as desktop I never really bothered to look into it)

My pc should be working at 2.4GHz(Pentium 4 with a Desktop CPU,it was one of the 1st notebooks with a Pentium 4 CPU) but it drops to around 900MHz after I have been using it for 5mins and it has become especially slow when I run more than 2 applications at a time. From what I have found out this seems to be a safety mechanism so that the processor doesn't burn out. I first noticed this problem 1.5 years ago but only checked the CPU speed last week and I would like to get it running at 2.4GHz again.

I am thinking of opening it up and removing the thermal pad and in it's place using thermal paste and maybe changing the cooling fans. Has anybody had any similar problems? Anyway helpful sugestions would be appreciated.

thanks

John

 

I've seen this happen on a friend's ze5000. P4 HT has a thermal throttling option, which means that it will decrease its speed at a certain temp point. Your problem, however, is most probably the dust, which has accumulated in the inside. Open it and clean it. Also, after you do that, you'd better find a cooling pad or at least raise the back of the laptop when working on a desk.

Here's the manual how to open the laptop.

 

Thanks for the tip Vasil

I have already opened up my laptop but didn't go down to the cooling fans. I will clean it and apply some thermal paste between CPU and sink.

I have another question. My laptop has 3 cooling fans. The 2 underneath work constantly but the one at the back(looks like a desktop cooling fan- I mean,certain towers have a fan whch removes the heat from inside)never seems to work and quite frankly I can't remember if it ever worked. Do you think I should change it? I haven't be able to find any model numbers for any of my cooling fans. Do you know how or where I would be able to find the models so I could at order some?

Thanks for replying promptly

John

 

The fans should have part numbers on them. Then go to HP's partsurfer and order the fans.
Yet, I believe the third fans is for the HDD and the CD/DVD driver. I have zv6000, which uses AMD's desktop Athlon and has pretty much the same design as ze5000. The manual from the link I gave you should say exactly what the third fan is for.