Need some advice to put me at ease. This morning, I received a warning message after rearraging the cabling in my PC. It turns out that, according to the BIOS as well as several monitoring programs, that I have 1.06V for the 3.3V, 1.75V for the 5V, and 4.22V for the 12 V. I know that this isn't accurate because the system starts fine and passes any test I throw at it from Prime95 to Futurmark. I tried swapping out the PSU and even flashed the bios but I still get the low voltage readings. IT is an ASUS P5N32-E Sli motherboard.
So should I be concerned about this or just ignore it?
Try a different power supply first. If you don't have a spare, now's a good time to get one. I always keep one handy for situations like this. Newegg had an antec 400w for twenty nine dollars after rebate, but it expired this morning.
Obviously, because the system boots and runs, the PSU isn't that bad. Before you swap PSU's, verify the readings with a DMM.
Measure between the colored wires and either chassis ground or the black wires. Yellow wires should be 12 volts. Red wires: +5 volts, orange wires: +3.3 volts, blue wire : -12 volts, violet wire: 5 volts always on. Tolerances are +/- 5% except for the -12 volts which is +/- 10%.
I'll give the DMM a try. I already tried swapping out the PSU (as noted in the origninal post) but it made no difference. I believe though, that if those voltages were in fact correct, the computer wouldn't even boot. Especially given that it has a 5770 video card. Without the correct power, the LCD wouldn't even come on (not enough power to the video card).
So, I take it then, that it is just a faulty monitor on the motherboard? In all the PC's I've owned (to many to count), I have never had that happen before. It can't be very common. I just hope that it isn't systemic, leading to other faults that are more problematic.
5.09, 12.09, and 3.3 just like the doctor ordered. I can only assume that whatever chips(s) on the motherboard that are designed to monitor voltage are dead or corrupt. I flashed the bios and it made no difference. Problem now is that I have no reliable way to monitor my voltages any longer without using a volmeter.