To continue this discussion, please ask a new question. Lenovo 53, Followers - Follow Mentions Products. Kyle for Lenovo. Get answers from your peers along with millions of IT pros who visit Spiceworks. Today I plugged in my USB stick and the machine rebooted suddenly. She says, 'uh, yeah it reboots by itself sometimes, espcially in the mornings, I just learn to live with it' its not an old PC, Intel core duo clone system.
I think it may still be in warranty. Nevertheless, others also have a physical switch wherein it allows you to select an appropriate voltage depending on the voltage used or supplied in your country or area. DC Output — It is the output voltage given by your power supply. The above given are also known as Rails.
Here V Rail is not listed as it is no longer used but is present for some legacy support only. Single 12V Rail in a Power Supply. Dual 12V Rails in a Power Supply.
It may result in PSU failure or computer shutdown if you overload it. Maximum Power combined — This one is for the maximum power for a single Rail or for combined Rails. The power is calculated in the product of Voltage and Current that is termed as Watts. So keeping it in formulae:. You can even check the number and types of connectors along with cables for the particular power supply, just by opening the case itself.
For example, you generally find in a power supply that is ATX 12V 2. Also, you can download the PSU manual or specs sheet from there. As said earlier, if you have a pre-assembled PC then you can refer to your manual for its specifications as that will state your installed power supply.
But this information may not always be that precise because some of the manufacturers can change the PSU in their newer variants of the same PC model, so what would be more suggested is to always open your PC case side panel to check your PSU model and specifications. Stay tuned with the latest Tech information. If you still have any issue regarding the power supply PSU which you using and want to find out its specifications, then you can leave a comment below.
Trust me! Test the other connectors. Unplug and turn off the power supply between each test. Test the power supply with a multimeter.
Plug the paperclip into the green pin pin 15 and into one of the neighboring black pins. Plug the power supply back in and turn it on. Find a pinout chart for your power supply. This will let you know which pins provide which voltages. Set your multimeter to the VBDC setting. If your multimeter does not auto-range, set the range to 10V. Connect the negative probe of the multimeter to a ground black pin on the connector.
Connect the positive probe to the first pin that you want to test. Make a note of the voltage displayed. Check the voltages to make sure they fall within the tolerance threshold. If any of the voltages are outside of the tolerance range, then the power supply is defective. Repeat the process for each of the peripheral connectors. Refer to the specific pinout charts for each connector to see which pins to test.
Reassemble your computer. Ensure that all of your devices are properly plugged back in, and that all of the motherboard connectors are properly seated. Once you have finished reassembling the computer, you can try powering it on. If you are still having computer errors, or your computer will not start, move on to other troubleshooting steps. The first place to check will be your motherboard. Luigi Oppido. The only way to know for sure is to use a power supply tester. You can make some solid guesses based on how your computer is behaving, but there's no way to know for sure without a power supply tester.
Not Helpful 4 Helpful 4. Yes, theoretically, a power supply should still be able to function if only one of the pathways is bad. It can depend on which pathway it is, but it's certainly possible. Not Helpful 1 Helpful 3. You should test all of them. All of those plugs should be working if your power supply is functional.
Not Helpful 2 Helpful 2. Take out the power cord, hold the "on" button for a minute, and put power cord back in. Turn it back on. Not Helpful 24 Helpful My PC turns on, Fan runs but that's it, will not boot.
The monitor detects no signal and it worked yesterday, am I looking at a new PSU? You should check or reset the RAM first.
Not Helpful 17 Helpful Test with a known good power supply. More likely, it is a faulty PSU, as the chances of getting a bad sensor are slim.
Not Helpful 0 Helpful After testing this, the fans did spin, but I did notice it started smelling burnt. My computer won't boot, and I cannot troubleshoot the issue. If you smell anything coming from your power supply, it's time to replace it ASAP.
Not Helpful 15 Helpful What do I do if my computer will boot up but it will automatically turn itself off sometimes? Your computer may be overheating. Check to see if there are any problems with the fan. Not Helpful 3 Helpful My computer does not show any sign of light even after plug it in, how do I resolve it? It might be a blown PSU.
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