Originally Posted by philhalo66
Okay so i noticed on my Pentium 4 system it says my 12V rail were almost always 12.4V so i went and got a digital multimeter and it was right its pushing 12.408V on the rails is this too much and should i toss it and get a new one?
That sounds a bit high. Do you have stability issues? Since it's a Pentium 4 I assume the PSU is also pretty old. There's something you can do, but it carries a shock risk if you're not careful. Open your PSU, and check the capacitors for any bulging or leakage. But DON'T touch any components. If there are blown capacitors, replace the entire PSU immediately, it can damage your computer. If you can afford it, I'd recommend getting a new one anyway, due to the high voltage. Mine is between 11.968V and 12.144V with an average of 12.08V (keep in mind it's a software reading).
EDIT: It might sound obvious, but remember to unplug the computer before doing anything to the PSU.