Questions tagged [power]
Electrical power is essential to the operation of any computer and any of its components or peripherals.
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Lenovo charging issue - help needed regarding the recently purchased charger
I've got a Lenovo Ideapad 100S-11BY, Modal: 80R2 Laptop
I just recently bought this charger for it - Charging Device Listing
When I plug in the charger into the laptops charging port, after about 10 ...
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How to know what current output a USB-C port can provide?
I'm designing an electronic device that will plug into a USB-C port. We need at least 7.5W (5V, 1.5A). The USB-C spec says that not all ports support the 7.5W or 15W output, but that it's optional. ...
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Finding out laptop battery charging polarity and voltage & current
I have 2 problems:
First one, I can not find the polarity of a laptop battery with which it charges. I don't know much about laptop batteries, and the only thing that is written on the label about it ...
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MiniPC started showing black screen overnight
The device in question is Minisforum HM80. I swapped SSD to larger one (with no heatsink, maybe it matters here), installed Fedora and it was running great for a couple of months (though I started to ...
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Windows 10 won't go to sleep
Recently, Windows started to hang when going to sleep, which then shuts down on its own. The odd thing is that this doesn't happen all the time. It is able to sleep normally without issues when I just ...
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laptop shows no reaction to power button
I wanted to install Linux on an old Lenovo G585.
I interrupted a Xubuntu install process rudely while it was copying data (after the keyboard layout and language configuration).
Now the laptop doesn't ...
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TLP vs sysfsutils for limiting machine temperature
Let's say we wish to keep our desktop, which runs Debian stable (with some minor upgrades from snapshots), relatively cool (e.g. because the machine has only passive cooling) by limiting the machine ...
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Can a PSU handle nanosecond power-outtages?
My GPU has recently died, and I got to wounder why. I have been having PC shutdowns and bluescreens over the last 5 years. I noticed at some point, that these often happen when someone turned on a ...
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Can a loosely connected PSU damage a laptop?
is it a bad thing that the cable connects to the power adapter block in a laptop power supply comes loose and is left alone while the laptop is under use (as shown in the picture)? I am worried it ...
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Possible faulty PSU?
I had power ran out on me on Sunday while the PC was on and since the the OS (Windows 10) kept losing power as soon as I put stress on it. Not shutting down, losing power and then rebooting. I looked ...
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Windows 10 how to get into sleep state quickly when there is suspended process
I use Process Hacker or PsSuspend to suspend process. When there is no suspended process, Windows get into sleep state completely only seconds after I clicked sleep from the power menu, but become ...
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Computer is frying all USB devices that are connected
My computer specs are as follows. The computer is almost 1 year old. It is custom built:
Motherboard: ASUS h510m-a
OS: Windows 11
PSU: EVGA 500BR
In the past hour, I have connected multiple mice and ...
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CPU speed drops to 0.48GHz afer plugging charger
I have a Lenovo Yoga 500-15ibd laptop that I recently bought (used). Everything in it seems to be fine but whenever I plugin the charger it slows down.
I looked at the task manager and I saw that as ...
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Looping "Power surge on USB port...more power" after accidentally trying to insert USB-C into USB-A slot
I accidentally tried to insert my YOGA power cord into the solitary USB slot: removed it right away but now cannot get rid of Windows Explorer notification "Power surge on the USB port. Unknown ...
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What do WiFi power saving modes (energy saving modes) on computers (esp laptops) really mean?
If you dive into power saving (energy saving) mode on most computers (and nearly all laptops), you'll see a variety of levels at which you can specify the amount of power savings. These can often be ...
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Windows 10: Only wake display with keyboard after PC power button press
I recently got a set of new monitors for my PC and it's a bit awkward to turn them off when I'm done with my PC for the day, and my screensaver/auto sleep doesn't always come on, due to background ...
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Is it possible to limit the current draw through the charger of an Asus laptop?
My laptop's charger broke, and I have been using a borrowed charger as a replacement while I wait for a warranty replacement. The original charger is 120W (20V, 6A) and the borrowed charger is 65W (19....
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BIOS setting to power on after power loss isn't working properly
What would make a PC to fail to automatically power on after power loss when it's configured to do it like that on the bios?
The PC works well otherwise and sometimes powers on automatically after the ...
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Can I use power cord from old psu to new psu of same brand(Corsair cx650m to Corsair HX 750)
I bought a new Corsair HX 750 psu recently and found out that the power cable that comes with the box has UK style 3 pin. But I have Indian style 3 pin connector to wall. Can I use the power cord from ...
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How do I find how much a battery pack can charge my device?
I have a Dell laptop with these battery specifications from HWID HWMONITOR
I want to buy a powerbank, and saw there are many 20k mAh/30k mAh batteries, as described by sellers. How can I check how ...
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Laptop battery calibration not working even after trying all the methods and bypasses win 10
The image shows how fast the battery is wearing out. but then when I checked today it gave me about normal battery backup.
The discharging stops at 5.5% then it stays on for about 3 more hours on ...
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Accidentally plugged in USB-C hub cable into Laptop HDMI port. won't turn on
I have a Dell Inspiron 7506 2n1 (2021 model). I have a USB c hub cable that I accidentally plugged into my HDMI port. The USB c hub itself was connected to my monitor (not to an outlet). The laptop ...
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Powerchute Windows10 and reducing power consumption while on UPS battery
I have a computation app that can sense running on batteries, but does not trigger when PowerChute 3.1.0 is running on battery power (APC UPS1500 Pro). That app knows the power is limited, but Win10 ...
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Got an IdeaPad S206, but only round Thinkpad chargers. How to charge?
I'm working on a used Lenovo IdeaPad S206, to possibly make it donation-worthy. Right now, my problem is: Can't charge it! It uses a charger that's different than ThinkPad chargers (both the round and ...
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Desktop machine doesnt power on until it has power from wall for around a minute
I have an old Windows XP machine from 2004 that doesn't power on until it has time to "warm up" after its plugged into the wall. If I try to press the power button after I've plugged it in ...
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Desktop PC won't turn on, motherboard light is on
Background:
Desktop PC was working last week. I moved/hid it to prevent it from being stolen in case someone broke into my house as I was away, now it won't turn on.
Problem description:
computer won'...
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No Power to Asrock X570 Phantom Gaming-ITX/TB3
I have an Asrock X570 Phantom Gaming-ITX/TB3
The recent problem was that my computer would regularly have lost the TPM settings from the BIOS. The computer would also start up on its own with no ...
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PC wont boot and light flash when trying to power down
I have a PC i'm building with old parts from my main desktop and it wont post. It boots up and the fans spin; however it will not do anything else, even turn off. When I try to turn it off the lights ...
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Linux Mint Laptop (With a UPS) Turns Off When Power Goes Out
I had a Linux Mint (MATE) laptop with a working battery, but just to be safe I also bought a UPS backup, and plugged the laptop into it. When the power went out, the laptop stayed on, and life was ...
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Anybody make sense of these GPUZ readings from my XG Mobile
So I have an XG Mobile 3080 that's started acting weird,
Recently it has been stuck at 210MHz regardless of what its doing, by switching power plan to turbo I can achieve 300MHz and with manual mode ...
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Unable to charge HP Envy Intel i7 11th gen with Comsol 25600 power brick
I purchased and HP laptop as above. The battery won't get through a full day on a charge, so I purchased a Comsol power bank. I have contacted Comsol and have been told that it should charge a laptop ...
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Internal Power Error
From time to time my 1st attempt to turn on my PC fails (the motherboard manufacturer logo is displayed and then immediately PC shuts down). Every attempt after that is always successful.
Here is the ...
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Initiate sleep power state on PC from USB
I have been looking at designing an external pcb to turn on and off the PC, and lately I have been thinking of ways to improve this construction.
After a few quick googles searches I found you could ...
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How to troubleshoot random laptop poweroffs?
My Thinkpad x230 shuts off randomly. There's no shutdown sequence or any delay, just click, off. It can run for hours or days just fine, or do it several times in one day. It boots back up immediately ...
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Charge power bank from ThinkPad tablet?
While plugged into mains, can I tell my ThinkPad Tablet X1 3rd Gen to charge my Nitecore NB2000 power bank instead of my power bank charging my tablet?
It is running Windows 10 Pro.
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10-year old Sven Pro 1000 UPS turns off if load is low - batteries are good
I have a Sven Pro 1000 UPS which is 10 years old. However, it still works good after replacing its batteries twice. The only problem is that it automatically turns off if the load is very low - for ...
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How to automate powering of a USB port?
The Problem
I have a bonkers KVM switch configuration to control 4 monitors across 2 PCs and a raspberry pi, and due to the nature of my configuration one of my monitors occasionally needs to have a ...
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Soldering another USB Female Port to existing Female USB Port
I have a device that can give only gives out power to the USB socket, I want to add another USB port onto this but I was wondering if it can do that without affecting performance or without it ...
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Permanently Turn on Super USB-C Charging ThinkVision P34W-20
This question is probably specific to this particular monitor but hoping someone has had experience with this type of thing.
I am using the ThinkVision P34W-20 curved monitor and connecting to my ...
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Is 60Hz optimal refresh rate recommendation still dependent on frequency of power for modern monitors?
This question is basically part of this one I had asked before, but a different topic so I am asking a new question (basically I had figured out most monitor brands recommend 60Hz refresh rate ...
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CPU Doesn't Go Below 5.5 watts on idle
I recently updated my laptop (i7-6700HQ, 8gb ram) from Windows home 1703 to Windows Pro 2004 and now on idle my CPU will rest at 5.5 watts and temperatures mid/high 40s. On Windows 1703 it would be ...
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Intel Nuc (NUC6i5SYB) - Power On After AC Power is Restored (is not reliable)
We have Ubuntu Server running on a NUC6i5SYB that's powered by a UPS. In the BIOS, I have this power option saved:
After Power Failure: Power ON
In the manual, it says this option means: "System ...
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Is it safe to pull the power plug off of the monitors?
I have four monitors plugged in through Amazon Smart plug so that I can turn off all the monitors with ease while keeping the Desktop running.
But one of the monitors recently failed. Is it safe to ...
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Mini pc won't turn on with power button, but WILL turn on using the power button if you unplug power and plug it back in
I have a small mini-pc from Aliexpres with a celeron n5105 in it, 16gb RAM and 500gb ssd (both Crucial brand).
It is running Proxmox (Debian) and it was working fine.
After some fiddling around with ...
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UPS graceful shutdown - how to automatically restart the server when the power is back?
I have a home server (Intel NUC i7) supported by a basic UPS (Eaton Ellipse Pro 650).
The UPS is connected to the server via USB and is configured to gracefully shut it down when its power runs off. ...
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How to know if USB hub receives enough power to power all my applicants/devices(used bandwidth)?
I have USB type c that connects these devices: (1) 2 TB SSD (2) Ethernet network (3) Mouse (4)Keyboard (5)Aux speakers.
I was wondering if the hub receives enough power or not from a single type c ...
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How can m.2 usb 3.0 devices power an m.2 ssd?
All these devices claim to be downwards compatible with usb 3.0 or even usb 2.0. How can they power up m.2 pci ssds which can consume up to 9W (checked with smartmontools) if usb 3.0 gives a maximum ...
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Why would fiber optic enabled with mainline power but disabled with electric generator?
I live in Puerto Rico and recently we have had an power loss for a week because of Hurricane Fiona
I have fiber optic with my internet provider and IPTV also. The internet didn't work when we were ...
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Is it okay that part of the power jack is outside the device?
I have some devices whose DC adapter connector/jack is only partially plugged in.
For example, my monitor has an AC to 180 W DC power supply. When connecting the transformer to the monitor, the DC ...
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USB Power Delivery - Only charging or also 'powering' devices?
I recently bought a laptop that is able to be powered via USB-C Power Delivery 3.0 on 100W (20V). From what I understand, PD (3.0) can be used to charge the battery, but also 'run' a device, i.e. the ...
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