Saturday morning, this past weekend, I dropped a new heatsink/fan in my computer (a Zalman CNPS9500 LED) as I've been doing a fair bit of research on overclocking over the past little while, and have decided that it was time to give it a try.
(just so you know what I'm working with here I've got an MSI K8T Neo FIS2R motherboard, with an Athlon 64 3200+ Processor)
Before I did anything, I run some tests and had discovered that the CPU was running around 68C without load... and under a load (using Super Pi) it got up to 96C, which was my big motivator to get some improved cooling in there. So, like I was saying when I woke up on Saturday morning I installed the HSF, and everything was working GREAT! The Zamlan kept everything all kinds of cool... without load I was around 38C, and when it was loaded down it got up to 40C.
Then Sunday, seeing how smooth everything was running I figured I'd take a crack at the BIOS and try for the overclock.
I went with a 5% increase to start with. I figured that with this new HSF heat would be an issue considering how much cooler it was running than it was previously.
Everything started just fine, so I went over to my XboX and played around on that for a bit while I left my computer running just to see how stable it was going to be... and well, after a bit I came back to my computer to find it not working... all the fans were still running and the case-lights were on... it just wasn't doing anything.
Seeing this as a problem, I shut it down, unplugged the power supply, left it for the night and went back to it this morning before work.
When I turned it on, once again all the case lights and fans came to life. But that is it.
There were no tell-tale beeps of a computer starting up and the HD and power lights on the front of my case didn't come on...
What's going through the back of my mind is that I don't know how long it was running as hot as it was, but I'm thinking that might have had something to do with it... then the extra juice I put through it for the OC was the straw that broke the camel's back... Does that sound feasible? or does this sound like it might be something else?