CPU/Mobo Help- Random CPU temperature spikes

[4nd3r50n]

A strange issue has been happening for some time with my CPU. I have an Core i7 860 CPU running with its default cooler. My CPU temp randomly jumps up to 99 degrees (TJ Max) and causes the system to shut down. I have no idea why this is happening. There is no particular task that causes this- I may be browsing or playing a game or working on a Word document. It is just random with absolutely no pattern.
The only hardware change that I did recently was change the power supply. I'm unsure if it could be causing this issue.

Any thoughts, suggestions, troubleshooting steps in resolving this issue would be most helpful.

Thanks

 

[ALPHA17]

@4nd3r50n buy a cheap third-part thermal paste, take off the heat-sink apply it and reseat the heat-sink.

This should solve the issue, if it does not "you know who to call."

TIM's worth getting for this job --

• Cooler Master HTK 002 ~150/-
• SVG Tech Thermag v1 (Shin Etsu OEM paste) ~150/- [for a 1.5 gm tube]
• TuniQ TX-2 ~350/- [for a 3.5gm tube]
• Arctic Silver 5 ~550/- [for a 3.5gm tube]
• Cooler Master Thermal Fusion 400 ~600/- [for a 5gm tube]

Here are a few reviews / guides on how to use TIM -- Guide - How TIM Works & How To Apply It Correctly | bit-tech.net / 80-way Thermal Interface Material Performance Test | Thermal Interface Material,Thermal Paste,Heatsink Compound,80-Way Thermal Interface Material Best Thermal Paste Heatsink Compound Cooling Performance Comparison Benchmark Tests.

Hope this helps, Cheerio!