Meh, I ran my 1090T OC'd since I've owned it (4/2010). I either was running it at 4-4.2GHz on water cooling in the summer or at 4.6GHz on my phase change cooler in the winter. I retired it to my back up rig and now it is taking it easy running at 3.7GHz on an aftermarket air cooler. Sounds to me like your OS got corrupted and you need to reinstall it, it happens and actually is not a bad idea to do every so often just to keep things fresh and running smooth.
I'm not all to familiar with BIOSTAR's products but they seem a little on the cheap side so if after trying a fresh OS install if that does fix it I would say that your motherboard is probably the culprit. Not sure how many phase VRM set up it has but I'm willing to bet that it not quality and therefore probably not delivering clean power to your CPU and RAM.
Other things to look at would be your CPU core temps? When was the last time that you replaced the thermal grease on your CPU? Are you using the stock CPU cooler that comes with the CPU.....please say no! Never OC a CPU using the stock CPU cooler....it is not designed for OC'ing and can cause you issues.
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Requiescat In Pace AMD Processor Forums | Member since: 1/19/2009 | Post count: 4142
Please don't PM me with questions, instead create a thread so that everyone can assist and benefit from the knowledge provided. Thanks in advance!