2025年3月13日 · Dell Inspiron, XPS, OptiPlex, Precision, and Vostro desktops come with a handy built-in self-test (BIST) feature for the power supply unit (PSU). This feature, along with the LED indicator on the PSU, helps you check if everything's working fine.

2009年12月17日 · Blue was the sefault setting, and thats what i usuakky runit at. the ANtec PSU calculator i used recommends my computer to use a 275 watt pSU. my question is, what does the button do? is it...

2017年4月4日 · You should have a cable plugged in for the computer to work, the switch is a simple on/off switch, if it's on the 'O' side, your computer will simply not turn on, as if the cable was not plugged in no damage will be done. The system looks really rusty, I'd wonder if there's some hardware failure somewhere.

2025年2月8日 · Press the BIST button on the computer and check whether the LED lights up. The light should be solid on not flickering or flashing, and the power supply fan should also turn on to speed. If the fan is not spinning up properly, this should be considered a …

2021年5月26日 · What does this blue button on the power supply do? It tells you that you need a new PSU because this one is an ANTIQUE Topower from around 15 years ago. It releases the magic smoke. Any sort of...

2009年6月30日 · Most power buttons nowadays can be changed to set to standby instead of hard power down. Try pressing it in for 4 seconds, that forces a full power off on all power buttons. This button has nothing to do with ACPI. It is clearly built into the PSU. You must log in to answer this question. Find the answer to your question by asking.

2015年3月9日 · Diagnostic button for the power supply known as PSU BIST (Built In Self Test). This tool enables technical support agents to determine if the PSU is working properly. PSU BIST has 2 diagnostic results – Green LED = PASS, no LED = Troubleshoot (you will need to troubleshoot to fault isolate if the PSU BIST fails).

2024年10月15日 · The button on the back of a Dell Power Supply serves an important function in regulating and controlling the power flow to your computer. Its purpose is to provide a convenient way to turn the power supply unit (PSU) on and off. By pressing the button, you can easily toggle the power supply on or off as needed.

2018年11月6日 · There is no need to turn off the PSU at the rocker switch if that's what you're referring to, but if you feel you ought to then do so. It won't harm anything if you leave it switched on --- makes...

2020年12月11日 · What's the button that can be toggled beside the PSU switch? So I have a ASUS ROG STRIX 650W for power supply and I just saw this button beside the power supply switch that seems to not do anything? I accidentally pressed it once while my PC is on but nothing seems to happen, tried to test if anything happens if its toggled but I just can't ...