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Questions tagged [power]

Electrical power is essential to the operation of any computer and any of its components or peripherals.

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ATX Power Supply Unit with one/some Always-On Molex Connectors?

I know (current) ATX PSU will turn off its power after the PC shutdown. This is good. I know (old) AT PSU will leave its connectors with power on even after the PC shutdown. Ref: https://en.wikipedia....
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Is it okay if the Power LED to flash once while switching on UPS?

My CPUs front panel power LED is flashing once after I powered on the UPS. A 'TUCK' sound is also coming from my speakers. Is that normal or is there any issue with my motherboard?
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Roughly every week, computer blackscreens and won't turn off

I've encountered probably the most annoying issue possible for someone trying to diagnose it. Roughly every week, my computer suddenly blackscreens (no signal to monitors) while staying powered and ...
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1answer
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Is there a name for this kind of power cable?

I really like these PC power cables with the flat, side-by-side wire instead of the fat round ones you usually see. I can't seem to find them on Mouser, etc when searching for "flat". Do they have a ...
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2answers
74 views

Voltage Stabilizer and USB Hub

I need to use a voltage stabilizer to secure my USB Hub (Anker PowerPort 6), but the stabilizer is slightly underpowered. It is rated at 1.3A, 300W (230V). My Anker has input requirements of 1.4A (...
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1answer
39 views

External SSD not working with USB C to A cable

I have a cheap Sabrent SATA III to USB 3.0 SSD enclosure (EC-UASP, 2.5-Inch SATA to USB 3.0 Tool-free External Hard Drive Enclosure) that I often use with an equally cheap SSD for some extra storage. ...
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1answer
19 views

GTX 1050 and GTX 1050 Ti-based cards power socket?

Some graphics card have a power socket in addition to drawing power from the PCIe bus. Is this the case for nVIDIA GTX 1050 and GTX 1050 Ti-based cards? That is, do No vendors' 1050 and 1050 Ti cards ...
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1answer
37 views

I gave 12V to my USB port on my laptop G50 70 i3 4th gen and now it's not working [closed]

I built a DIY cooler station for my laptop laptop which features both USB powered as well as 12V - 20V DC powered jack. I knew from the start that I that it would be possible to accidentally power ...
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12 views

What can cause a PC to power back on after being suspended?

I have a W10 (latest version) desktop PC. The first time I suspend it after booting, it stays off. If I then wake the PC, work some more, and suspend it again, the PC does go into sleep mode but then ...
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2answers
51 views

Computer doesn't seem to boot

A while back I bought a new computer. The old one was catching dust in the attic, but about a week ago, I saw it and decided to use it as a NAS, Network-Attached Storage. I cleared it of dust, ...
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246 views

How to fix the “Unknown USB device needs more power than the Port can Supply” error?

There's a message popping up saying: Unknown USB device needs more power than the Port can Supply. What do I have to do? What's wrong?
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Power state continually swaps between charging and discharging

When connected to AC power, my Lenovo T440s (2014) intermittently switches from "charging" to "discharging", and very quickly back to "charging". A full cycle takes just a few seconds (anywhere from ...
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How to properly ground dual PSUs for powering extra hard drives?

My project: I'm trying to build a small storage server with some old hardware I have lying around. The motherboard I am using has 4 SATA and 1 IDE connector, all of which I will be using to connect ...
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48 views

Can I leave my computer turned off for several years?

I'm planning to work abroad for several years and I can't bring my trusty PC along. I'm gonna buy a laptop and I'll possibly only come back home after 5 years. So my question is: Is it OK to leave my ...
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Random Hardware Anomalies after accidental reverse polarity

Good afternoon everyone, I have a bit of a weird question for you. About a month ago, I purchased a used Mac Pro 1,1 (2006). I proceeded to slap a GTX 1050ti in it, install windows and everything is ...

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