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Windows 7: CPU at 91C and lagging severely at all times

09 Mar 2016   #1
whiskeybacon

Windows 7 Ultimate 64bit
 
 
CPU at 91C and lagging severely at all times

I am at a loss.

A few weeks ago while playing supreme commander I experienced severe cpu lag. I first thought this was due to my SSD getting very full and causing lag from having to write/rewrite constantly. So I wiped the SSD totally and put a brand new copy of windows 7 ultimate on it. I updated all service packs for windows 7 and also downloaded new BIOS and video card drivers. Even at BIOS screen it says my processor temp is 91celcius while doing nothing.

And when I load to windows it is laggy while doing anything and everything. Lag from a few seconds to 30 seconds. I don't know what could be causing my CPU to bad. I ran the windows experience rating tool. My cpu scored a 2.4 When I first built the PC it scored a 7.6 or something Any advice? I have spend long days trying to figure this out and reinstalling everything fresh.


My System SpecsSystem Spec
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09 Mar 2016   #2
OvenMaster

Win7 Pro 32bit; Zorin OS 9 Core (in VM)
 
 

Your I7 is overheating and it is throttling down to prevent permanent damage.

Your specs say you custom-built your PC. I would recommend removing and replacing your thermal paste between your heatsink and proc before powering up your rig again. Double-check to make sure your fan is working and your heatsink is attached properly. Blow out all the dust bunnies.
My System SpecsSystem Spec
10 Mar 2016   #3
whiskeybacon

Windows 7 Ultimate 64bit
 
 

I guess I could reapply thermal paste. I have had about 3 years of trouble free usage so far. I have a water cooling unit on top of the cpu and cleaned out the inside of the computer as well. The case also has side and top fans. I guess it couldn't hurt to put new paste on. I will double check the fan that blows across the radiator as well.
My System SpecsSystem Spec
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10 Mar 2016   #4
mjf

Windows 7x64 Home Premium SP1
 
 

You can also try the Intel diagnostics tool.
https://downloadcenter.intel.com/download/19792

When reapplying thermal paste clean CPU and heat sink thoroughly with high purity isopropyl alcohol and link lint free paper (coffee filters are good). Don't apply too much paste and I'd use new paste.
My System SpecsSystem Spec
10 Mar 2016   #5
whiskeybacon

Windows 7 Ultimate 64bit
 
 

Good tip. I will pick some up tomorrow. You guys are very helpful. Hopefully this will do the trick.
My System SpecsSystem Spec
10 Mar 2016   #6
OvenMaster

Win7 Pro 32bit; Zorin OS 9 Core (in VM)
 
 

Quote   Quote: Originally Posted by whiskeybacon View Post
I guess I could reapply thermal paste. I have had about 3 years of trouble free usage so far. I have a water cooling unit on top of the cpu and cleaned out the inside of the computer as well. The case also has side and top fans. I guess it couldn't hurt to put new paste on. I will double check the fan that blows across the radiator as well.
If this is a water-cooled PC rather than air-cooled, then I'd verify that the pump still works, the radiator is clear of all dust, lint, hair, etc., the fan works, and make sure that all tubing fittings don't leak air in order to make sure that the coolant is definitely flowing through the system. I'd double-check the water block mounting and thermal paste. At 91C the radiator should be too hot to touch. If it's cool, then you're not getting coolant flow through it.
My System SpecsSystem Spec
10 Mar 2016   #7
ThrashZone

Win-7-Pro64bit 7-H-Prem-64bit
 
 

Hi,
Agreed does sound like the pump is out
My System SpecsSystem Spec
11 Mar 2016   #8
whiskeybacon

Windows 7 Ultimate 64bit
 
 

Alright thanks for the advice gentlemen. I bought a new liquid cooling system and installed it. CPU working perfectly again Scored a 7.8 on the windows experience index. A good improvement from the 2.4 it was stuck at LOL. I should've come to these forums 2 weeks ago. Enjoy your weekends.
My System SpecsSystem Spec
12 Mar 2016   #9
OvenMaster

Win7 Pro 32bit; Zorin OS 9 Core (in VM)
 
 

Excellent!
My System SpecsSystem Spec
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 CPU at 91C and lagging severely at all times




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