A power supply is an electronic device that supplies electric power to another device, such as a computer, monitor or printer. This is achieved by converting wall power (or mains power) to a lower voltage, and in most cases also from AC to DC. Most power supplies also provide protection from ...
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1answer
52 views
Computer Randomly Powers Off
A few months ago my computer started randomly powering off, sometimes I would get a few hours, sometimes a few days. I first replaced the power supply (PC Power and Cooling Silencer Mk II) which ...
1
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5answers
55 views
Is there a risk of damaging a laptop with another power adapter make?
It'll take a few days for a new adapter to arrive for one of the laptops which has the following input and output voltages
input: 100-240V ~ 1.6A 50-60hz
output: 18.5V 3.5A LPS
The other adapter ...
0
votes
0answers
15 views
HP Compaq 610 Battery not charging
my mother has a Compaq 610 running Windows 7 Ultimate. The problem here is that it is not charging when it is plugged in. It does take power from the power supply but the battery is not charging. The ...
0
votes
0answers
19 views
Power-on button takes a long time to work after PSU is turned on
I have a four-year-old Dell Inspiron 530 desktop with onboard video and recently it started to show this weird behavior (sorry, it’s a long post…).
The computer is connected to a voltage regulator, ...
1
vote
0answers
24 views
Computer only boots after connecting PSU PSON connection to motherboard PWRSW + ground
My server ( ASUS M3N78-EMH HDMI ) would not come back up after I put swapped some RAM. I got it back to work eventually but there is something strange: after a complete power off (pulling the ...
0
votes
2answers
48 views
Did I fry my motherboard or my power supply?
I just installed a second video card (GeForce 7900 series) alongside my older GeForce 6700 Series. After the computer was powered on for about a day, I came back to find the unit dead, with the power ...
1
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0answers
34 views
Benchmark tool that brings GPU to maximum in order to diagnose defective PSU
I am currently trying to diagnose the following problem with my computer: Without warning or pattern the computer shuts down automatically, then restarts automatically and BIOS displays the following ...
0
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0answers
20 views
Asus GTX650: Underpowered it and it is no longer detected. Driver issues or damaged?
I installed an Asus GTX650 graphics card into a new computer (i3-3220, reasonable decent motherboard that would support it). I failed to take into account for the PSU, which just about matched the ...
0
votes
1answer
44 views
Laptop does not start anymore because of power issues
I had power issues with my laptop (HP Pavilion dv7 1040ef) for awhile (two dead accumutators, some shutdowns for no reason), but now my computer won't load anymore. I can still start it on ...
0
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0answers
25 views
Are idle tempatures on HWMonitor changing as much as 5 degrees in a second “normal”?
I'm monitoring my heat from about 7% CPU usage on a Core i5 - and HWMonitor is reporting temp. jumps as much as 5 degrees then within 500ms it jumps somewhere else again. Is this normal?
0
votes
0answers
28 views
UPS shuts down when using with modem alone
I'm in a place where power cuts are very common for around 5 hours a day. I have a DSL internet connection and a PC. I recently purchased a new laptop which easily gives me 4 hours of battery backup.
...
1
vote
1answer
38 views
How can I determine how many amps I need to power my laptop?
I'm doing a show in an exhibit hall and will be using my laptop with a credit card reader. I need to order my power connection and my choices are: 5 amps; 10 amps; 15 amps, or 20 amps (all at 110V).
...
3
votes
1answer
67 views
What is the 12.8V rail on my PSU?
I've taken a PSU from an old Compaq desktop I had lying around and I wanted to turn it into a cheap 12V power supply to power my CB transceiver. However, on inspecting the PSU, I found that it had a ...
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votes
1answer
45 views
Computer and power supply [closed]
If the computer is given power supply with the battery removed from it, and suddenly the supply goes off, in such an event what happens to the computer? what happens to it in the long run?
7
votes
2answers
109 views
New build not powering up at all after connecting psu cables to hard drive
I recently decided to build myself a new, cheap(ish) rig mainly for HTPC use and I have now run into a BIG problem.
The system simply refuses to show any signs of life.
Problem:
When I press the ...
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votes
0answers
29 views
Dell E6400 power probems [closed]
my E6400 has power problems. It only turns on with the adapter connected and only sometimes. When I connect the adapter sometimes the blue light goes off and I measure its output voltage and its 0V ...
0
votes
0answers
42 views
How can I fix a dell xps1530 laptop battery that will not charge all
I have a dell xps 1530 laptop. The laptop initially came with windows vista. However, I once upgraded to Win 7 64 bit and it was working alright till I started having problems with a few software that ...
3
votes
2answers
54 views
Autonomous powered RAM units
We all know that RAM is alive only when it is supplied by power, because the data need to be refreshed every couple of milliseconds. My question is, if there are any RAM units for regular PC's that ...
0
votes
1answer
15 views
Hp pavilion dv4 1211 power adapter does not work
i have laptop Hp pavilion dv4 1211
i have a problem with may power adapter (Hp pavilion dv4 1211) .
when i attach with laptop(Turn off) the indicator light will rise up . but real problem is start ...
0
votes
1answer
53 views
How to calculate total / max electricity consumpton for a server / or hardware equipment.?
Consider I have in the cisco 2911-sec/k9 data sheet with following power values
Maximum Power with AC Power Supply (Watts) 210
With this given value how can one calculate total electricity ...
2
votes
1answer
41 views
Thermaltake PSU button won't stay in the “on” position
My Thermaltake Toughpower Grand 750W PSU (P/N TPG-750M like on their web page, but the design shown below) has a mechanical AC push button rather than an on/off switch, and after turning it off today ...
2
votes
1answer
30 views
Is it possible for graphics related glitches to be caused by PSU
To simplify for the reader, an oversimplified version of my question comes first (though perhaps it is enough).
SUPER-SHORT version
Is it possible for a power supply to be failing in such a way that ...
0
votes
1answer
36 views
Wake up PC via USB from another PC
How can I wake up/turn on Linux powered PC from another Linux powered PC via mutual USB cable?
0
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1answer
72 views
computer shut down suddenly and now won't boot
I have a DIY computer that was built about 3 months ago, and worked fine until this week where it shut down suddenly while using Word. The only other application running at the time was Google ...
1
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0answers
64 views
What can cause “Reboot and select proper boot device” other than hard drive issues?
I'm having some weird issues with my computer that I'd be hugely appreciative if someone can help me troubleshoot.
Recently, my HTPC will start fine, then after 20-30 minutes it will freeze up and ...
2
votes
1answer
44 views
What are power supply “rails” and how do I use them?
I have a EVGA 1500 Classified and am learning how to build my first high end PC in 12 years. Since the '90s something called Power Supply "Rails" was invented and I think it has something to do with ...
0
votes
1answer
101 views
How many watts do I need to run 6 5870s at these clocks?
following this question, I'm on a quest to finding the most appropriate power supply for me.
The eXtreme Power Supply Calculator only goes up to 4 video cards and does not account for underclocks and ...
0
votes
2answers
576 views
Using PCIe risers, how many GPUs can fit on one motherboard and what power supply would it require? [duplicate]
I'm going to make my own mining rig for bitcoins. I have a friend who's going to build me a custom casing for it so it will be open air. Now what I want to know is how many GPUs can be crammed onto ...
2
votes
1answer
35 views
PC does not start with video card
It's really strange situation that i cant't figure out.
Motherboard: ASRock G41M-GS3, Inter Core 2 DUO 2.13GHz, new PSU (Xilence 480W).
Problems start when i try to put in it my Radeon HD3850 - PC ...
0
votes
0answers
41 views
computer won't turn on but plugging in ethernet lights up switch
I have an issue where my computer/motherboard won't turn on, I am not sure if it is fried but when the ethernet is plugged in the light on the switch turns on, meaning that some kind of current is ...
1
vote
2answers
51 views
600W vs 1200W PSU in terms of noise? [closed]
I've been wondering, if my system draws about 400W at peak, which PSU would be quieter? assuming both are from the same manufacturer using the same type of fan and cooling mechanism? My theory was the ...
0
votes
1answer
126 views
Dell Laptop Battery Not Charging?
I have a Dell Vostro 3555 and recently I noticed that my battery is not charging at all. I see this message when I boot up the computer:
The AC power adapter type cannot be determined. You system ...
5
votes
1answer
103 views
Is DELL's HP-P2507FWP PSU's 20-pin connector wiring non-standard?
My old PC's ATX PSU died and I got a replacement in the form of a DELL 250W Power Supply model# HP-P2507FWP.
It has the exact set of connectors (except for an additional, unused, 6-pin connector), ...
0
votes
1answer
44 views
Poweredge 2500 6C822 PDM Board Pinouts?
Okay, here's a strange one: I am trying to use an old Poweredge 2500 chassis to house a newer ATX-type motherboard.
What I need to know is this:
What are the pinouts for the 6C822 Power ...
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votes
1answer
53 views
Extremely high pitched noise just came and went from my PC in the space of about 2-3 minutes
With my hearing I'm not totally sure but seemed to be coming from PSU/CPU area. Anyone know what would normally cause this temporary squealing? Gradually built up pitch and noise for about a minute ...
0
votes
1answer
33 views
Laptop Power not going through [duplicate]
I have a HP dv5-1000US.
Just now I faced a peculiar situation.
Normally when I plug the power adapter cord, the LED at the power input socket (on the side) stays completely on and so does the power ...
0
votes
0answers
56 views
PC crashes with Power LED Blinking at 1 Second Interval
I have a "server" that recently has started crashing around once a week. I have yet to find a reason for the crashing but the nonrecoverable nature of the crash is unusual. The machine is standard ...
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votes
1answer
45 views
IBM ThinkCenter doesn't power up?
My old ThinkCenter M-8143 doesn't boot. When I press the power button nothing happens. It's a brand new power supply, so can't be an issue with the PSU.
*If I remove the 4-pin CPU power connector ...
0
votes
3answers
91 views
Graphics card power requirement is more than my PSU
I put together a HTPC and it turns out, the integrated APU is not powerful enough to play Blu-Ray's or stream Netflix. I need to replace the entire motherboard/CPU (components are soldered together) ...
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votes
3answers
79 views
What Power Supply Unit (PSU) is needed for 16GB RAM and Graphic card upgrade [duplicate]
I am planning to upgrade my computer case- A new graphic card and RAM to 16 GB.
PC Config :
Processor : Intel Core i3 2nd Gen
Motherboard : Intel Desktop board DH61WW
RAM: 4GB (upgrading to 16GB)
...
1
vote
4answers
128 views
What is 80PLUS?
Looking at various power supplies I see some of them listed as 80PLUS with various metal combinations. What does the 80PLUS label represent and how more efficient are they compared to ones without the ...
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votes
1answer
58 views
Grounding and why charge leakage occurs [closed]
A tiny nugget of info is missing in my end-to-end picture of how grounding works and why it's important. When a voltage is applied in a circuit the electric current starts flowing (or the field ...
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votes
2answers
42 views
DVI Pins electric current
I have a desktop computer and I am connecting the video output from the motherboard via a DVI-D (Dual link) cable. My question is that while the computer is switched on and I touch the pins of the DVI ...
0
votes
1answer
82 views
Laptop shuts off after 10 minutes while power plug in without battery [duplicate]
Laptop is getting shut down after 10 minutes while its run by power (plugged in )without battery, but with battery as well as plugged in it runs first 10 minutes by power then automatically runs by ...
2
votes
2answers
72 views
Is there a differnce between removing the power source cable from the computer or removing it from the wall outlet?
Reading about computer related crimes and how law enforcement policies are lagging adjusting to the digital age, I came across this document which is a manual of sorts, recommendations for the first ...
0
votes
0answers
228 views
Effects of disabling “Microsoft ACPI-Compliant control method battery”
I've been looking for software to disable the charging of laptop battery when the AC Power is in, since I have a laptop without a removable battery and am near a powerpoint 90% of the time.
I've ...
0
votes
3answers
57 views
Pc keeps shutting down for the first 10-20 minutes
My desktop pc keeps shutting down/freezing/rebooting itself (even in BIOS) in the first 10-20 minutes of activity, after that time it works properly.
I looked into the windows event register but ...
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votes
2answers
141 views
Laptop battery software to disable charging AND battery usage
I'm going to buy a Microsoft Surface notebook that does not have the capability to easily remove the battery. I'm also going to be near a powerpoint for around 90% of my usage of this notebook.
To ...
1
vote
2answers
93 views
New PSU New Issue, Fan, Hard drive, Disc Drive Start, Nothing Else
I've been in the chat for the past while and found nothing so I figured I'd come to the front page.
For about 6-8 months I've had issues with my computer not starting when it was cold and even then ...
2
votes
1answer
163 views
My computer doesn't start - it is stuck in a turn-on, turn-off loop
When pressing the power button, my computer starts making start-up noises, but after a few seconds it shuts down. Then, after 2-3 seconds, it automatically starts turning on again and a few seconds ...
