CPU Overheating even in idle!

[Vehat]

Hey guys, first of all, I've had my desktop for 3 years and here are my specs:

i5-4690k
ASUS z97-A
16 GB DDR3 1866 MHz
GTX 1070 ti
PSU 550W
1 - 500Gb SSD
1 - 2 Tb HDD
1 - 4 Tb HDD

Still using the stock cooler from Intel. (No overclock!)
The only thing I replaced was the GPU 3 months ago, but it seems to be running well, at around 55-60 degrees on max load. (This was also when I added the last 4 Tb HDD)

So, I did some GPU-mining for about 3 months, and I just recently noticed that my CPU was overheating quite a bit!
I used REAL TEMP GT to measure my temperatures and in idle, I was getting around 80 degrees and while gaming, it would easily get to 100 degrees, which would cause the CPU to lower it's GHz to preserve itself and cause massive FPS drops. Even browser games would make it reach that temperature, so I couldn't do a whole lot with it.

Today I decided to mess around with my PC and I disabled several things (that I don't recall atm) on the BIOS, but the main thing that seemed to help was that I disabled Intel Turbo Boost and maxed out the CPU and Chassi1 fans even in lower temperatures.
After I did that, I'm getting 45 degrees on idle and around 90-100 while gaming. (Overwatch, and GTA V )
I don't understand much about hardware, which is why I'm asking for help here.

Could this be because of how old my CPU is? Would changing the thermal paste help any? Or should I just get a separate cooler?
My main reason for not having gotten one yet, is because I currently live in Brazil, and things here are very expensive. However, if you guys believe that would solve my issue, I'd do it ASAP. I do travel frequently to the US, which is where I do my shopping, but I'm afraid this will damage my CPU too much if I wait that long.

 

[XxDarkMarioxX]

I would suggest not to use an stock cooler and try and buy an cooler that might help with the temps on the cpu or you could try and changed the thermal paste and see if it helps!

 

[Unolocogringo]

Check the push pins closely.
They do have a tendency to creep out with repeated heat cool cycles.
While you are at it . go ahead and change the thermal paste. with a full removal . Cleaning and new paste on reinstall.
Takes about 10 minutes and cost 25 to 50 cents if you already have a tube of paste. If not ask a friend.

 

[Swordkd]

I'd make sure your case is clean, that the cpu cooler fan is spinning under load and if that is all working, buy a different cooler. Shouldn't set ya back more than 30 dollars or so. Not to discount a power cable coming separated, I'd suspect that the cpu cooler took a dump on ya.

 

[Vehat]

Check the push pins closely.
They do have a tendency to creep out with repeated heat cool cycles.
While you are at it . go ahead and change the thermal paste. with a full removal . Cleaning and new paste on reinstall.
Takes about 10 minutes and cost 25 to 50 cents if you already have a tube of paste. If not ask a friend.

Thanks! I'll definitely try that as soon as I can!

 

[Vehat]

I'd make sure your case is clean, that the cpu cooler fan is spinning under load and if that is all working, buy a different cooler. Shouldn't set ya back more than 30 dollars or so. Not to discount a power cable coming separated, I'd suspect that the cpu cooler took a dump on ya.

Well, a $50 cooler costs about $90 where I live. Which is why I was trying to avoid buying it right now.
According to the BIOS, the Fan should still be spinning around at 2000 RPM.

 

[Swordkd]

I'd make sure your case is clean, that the cpu cooler fan is spinning under load and if that is all working, buy a different cooler. Shouldn't set ya back more than 30 dollars or so. Not to discount a power cable coming separated, I'd suspect that the cpu cooler took a dump on ya.

Well, a $50 cooler costs about $90 where I live. Which is why I was trying to avoid buying it right now.
According to the BIOS, the Fan should still be spinning around at 2000 RPM.

Open the case then turn it on, or just open the case and verify that it's spinning, and that it also isn't clogged with dust and crap. If it's clean, and spinning then taking it off, cleaning off the paste off the fan and cpu and reapplying and reseating the cooler should fix thie issue.

 

[PdxPetmonster]

Are you replacing the thermal paste with something high end? If not, I'd suggest spending a little on at least some MX-4, maybe some Kryonaut. While it won't give you the benefits of a better cooler, it will shave off a few C on your temps.