A picture's worth a thousand words, they say: So the 3.3v pins on my motherboard power connector aren't looking too good. They've been like this for a while now and I'm sure continuing to use it hasn't helped, but instead, just made the problem worse. As far as I know of, there are two possible causes for something like this. Either too much demand for the 3.3v rail or the connector was seated poorly. Since I have a decent power supply and not too demanding hardware, my guess is that it was the latter. The good old volt-o-meter tells me that the PSU is putting out a solid 3.30v. ASUS probe reports much lower voltages than that on the motherboard. They've gotten as low as 2.8 which was low enough to cause stability problems. After trying to clean it our for a while with isoprpyl alcohol and making sure the connector was seated nicely, it reports around 3.10-3.15v. Question 1: Is there a way I can check the voltage that my motherboard is getting with a voltmeter? Or is ASUS probe reliable enough? I have an ASUS P4P800 deluxe. Question 2: Any good ideas on how to try and fix the problem? I could replace the pins in the power connector, but there's no way I can replace the pins on the mobo side. Cleaning seemed to have some effect, though it's nearly impossible to clean them, and unless I can find a better solution, the problem only gets worse with time.