Cooling problems with newly cleaned rig!

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matrox02
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I Posted this in Cooling section as well ( Im kinda Desperate haha )

Hi there Guys, I have a problem with my rig that only started after I cleaned out my system of dust, A full Clean, with Isoprople alcohol, Now Pre Clean, My system would idle at no load at a nice 30Degrees Celsius on all cores +/- 1 or 2 degrees, now after I cleaned up the mobo + Cpu + Heat sink , I reassembled everything with new arctic silver 5 thermal paste between the heat sink and the cpu, I then fired her up and everything seamed to be running well and stable until i got into windows and opened up real-temp, and found out the cpu was idling at 100 Degrees Celsius, I then switched off immediately and let the heat sink cool down so i could re apply the thermal paste and reseat the heat sink, I then made sure it was all secure, and found that the Cpu sill has been idling fairly high, so reseated the Hs and re applied the Thermal paste again, to no avail the temp has not come down from 40 degrees idle and on load it jumps in milli seconds to above 71 degrees ( using prime95 ) which is very annoying, its running stock clock at the moment, and does not matter if i Oc it as i get the same temps, so I put this out to you guys What should I do??

My Rig is
Case : coolermaster cm690 II advanced
Mobo : Asus P5q Pro Turbo
Ram : Corsair ddr2 800
Cpu : Intel core2quad q8400
Heat sink : Arctic cooling Freezer 7 Pro Rev.2
PSU : cooler master 700Watt
Gfx : Evga gtx470
Case has plenty of active cooling

Temps No Oc
Idle : 40degrees ( min ) Load : 50-75degrees ( max seen 100 )

Temps OC @ 3400mhz
Idle : 43degrees ( min ) Load : 60-79Degrees

Temps PRE Cleaning
Idle : 28 Degrees Loaded : 45 degrees

Oops...

Fnawesome
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did you clean the cpu and heatsink prior to reapplying thermal paste, bear in mind it only takes a tiny amount smeared over the cpu to cover the microscopic crevasses its intended for. and did the heatsink itself feel hot? if not it could be you have it seated incorrectly, make sure the mounting hardware is in the correct position for your mobo/cpu. and for future situations, if it aint broke dont fix it.

matrox02
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Yup cleaned with the alcohol stuff too, i used the rice grain sized amount of arctic silver, and yes the heat sink does get hot too, and well I wasn't fixing anything, I was doing a general service, I am a PC Technician by trade but this.. is quite a new problem that iv never seen myself, its more a question of should i just write it off although its stable? or see how long it lasts and hope when it does fail it doesn't take all my data with it?, Eh I may just RMA it Really I only bought it a year ( if that ) ago

Fnawesome
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try using a tab more paste, and remember that there is a burn in period for the paste to settle into all the necessary spaces, during which the pc would run hotter

matrox02
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Burn in period or not.. this system shouldn't be idling at 50 degrees as it has been for the past few hours, in a well ventilated area, I put ti down to the cpu being F*$%ed as it does the same in other motherboards too

Fnawesome
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see if using another cooler makes a difference, it could be the temp censor in the chip has gone bad

matrox02
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oops thats one thing i forgot to mention, I have tried to use several other coolers, most of them intel stock coolers

Fnawesome
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idunno what to tell you then, like i said, could be the sensor, my mobos censor says my 12v rail is pushing 4v, thats obv wrong cause the system would crash, cheap ass censors. if the comp runs fine then my guess is the cpu isnt really that hot, your system would freeze at 75c guaranteed

matrox02
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Fair enough then, although tested on 2 mobo's I wouldnt be surprised if the other mobo was naffed aswell anyways ( old gigabyte POS )

Fnawesome
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mines a gigabyte aswell

noir2525
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Well u got a case of air pockets between ur heatsink and cpu. I had that same problem so i changed from the spread method to the X method when applying thermal compound. Keep in mind that when placing the heatsink over the cpu keep constant pressure on heatsink until its secured to mobo. if u let the heatsink lift off the cpu and push it back down u just let air pockets in. Air pockets make hot spots so u see temps 100c.

thermal compound application methods video
http://www.youtube.com/watch?v=EyXLu1Ms-q4&NR=1&feature=fvwp

Qmicra v2F = Core i5 2500k ~ ASUS P8P67-M PRO ~ G.Skill DDR3 1600 2x2gb Ripjaw X ~ GIGABYTE GV-R687OC HD6870~ G.skill Phoenix Pro 120gb ~ Creative Titanium HD ~ Killer 2100 NIC ~ Seasonic 650watt gold ~ 3TB storage

matrox02
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Thanks for the input, I had a gander and tried the x method, and there must have been a very small pocket as now the load temps are down compared to what they were, but still not really as good as they were, meh, its xmax, and sales time to upgrade too :P

noir2525
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arctic silver 5 requires a burn in time (50 to 200 hours of use to its final consistency designed for long-term stability) to get the full effect. Try Arctic Cooling MX-4 Super High Performance Non-Conductive Thermal Compound its ready to go out of the box no burn in time necessary and i get 5c more cooler temp than arctic silver 5. Its non conductive so no worries if it touches anything electric.