![]() ![]() However, your symptoms sound like a resource allocation issue with Win9x, and it looks like you've narrowed it down to that Intel NIC. Hardware stability is the foundation the system is built on. IMO checking voltages is easy to do and best practice on any PC, even moreso if it's exhibiting problems. I don't mean to turn this voltage thing into too much of a distraction though. If you check these things, try to observe not only if they look low, but also if they appear to be sagging under a load. It's possible to find Vmem and others, but it gets more difficult. But for the stuff I mentioned it shouldn't be necessary. If you ever find yourself poking the probe somewhere that you're worried about shorting something, then wrap the probe with tape so only a minimal tip is exposed. Checking this is optional of course, don't do it if you're not comfortable. But if this board has heatsinks in the way, then another place to find Vcore is at either of the solder points attached to an inductor (copper coil). The other half will have the upstream input voltage there (should be +12V). ![]() It's still relevant when the system is running.ĬPU Vcore can be measured on the large tab at the backside of half of the MOSFETs near the CPU. Negative probe goes to the PSU casing.ģ.3V can be measured by doing the same at an orange wire at the ATX power connector.ĥVsb is the purple wire. I'd measure both with system on and when it's off.ĥV and 12V can be measured from the red and yellow pins of an unused 4pin power connector that goes to a hard/CD drive.ġ2V for the CPU (4pin) can be measured by pushing the probe into the back side of one of the yellow wires on that connector while it's plugged in and running. When the power is off, it's possible a marginal battery could corrupt the CMOS settings, although those really ought to be powered by the PSU's standby supply. Some motherboards draw from the battery when the system is running, which is why they sometimes don't boot when it's dead. There's a middle ground between "good battery" and "dead battery", in which the battery's ability to do it's job falls into a gray area and it's effect on the system becomes uncertain. There's lots of ways to get the ground but the PSU case is the easiest and safest way when the power is on. Put the positive probe of multimeter on top of the battery, negative probe against the PSU case. How do I measure battery voltage while system is running? ![]()
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