The power tag has no wiki summary.
2
votes
0answers
13 views
Can append only NTFS files become corrupted if power goes out?
NTFS journals metadata so the file system itself doesn't corrupt if the machine goes down. I read this is not the case for file data itself. But what if the data is only appended at the end of the ...
0
votes
2answers
48 views
How many amps does a standard Core 2 based computer and a CRT require?
How many amps do a standard Core 2 based computer (assume ATX form factor with fans and a decent graphics card) require? Can a system be safely run on a 20 amp breaker?
2
votes
3answers
76 views
Would this short circuit?
My computer case has a built in fan which uses a Molex 8981 connection for power, but before reaching the fan, the wires split to form another male molex connector.
My problem is that if I was to ...
0
votes
1answer
25 views
Why doesn’t the screen turn off when playing music
I often listen to music on windows media player. I have screen set to turn off after 10 minutes. However, it doesn’t turn off when music is playing. Why?
0
votes
1answer
16 views
Win XP Screen saver / power management not working
I have a PC running Win XP, and even though I have the power management set to turn off the monitor after 10 minutes, and I have the windows screen saver set up, many times they never kick in. I come ...
0
votes
1answer
38 views
Is My PSU compatible with this UPS
I have this PSU and this UPS, however due to the PSU being/having an active PFC (power factor correction) it is incompatible with my UPS (at least according to APC tech support, for reference see my ...
3
votes
3answers
103 views
Computer hangs due to underpowered UPS?
I just bought a new UPS. Now since I started using it I experienced at least 3 random freeze in Windows 7 and it happens during the first 10 minutes of start-up. Note when I say freeze, I mean I ...
4
votes
2answers
47 views
Why does my computer randomly power off?
Situation:
have a 6 year old PC but it powers off randomly, sometimes it will take a few hours, or sometimes it won't happen at all
when it does happen, the system loses power, but the mobo power ...
0
votes
1answer
39 views
Dell Inspiron 1545 laptop - screen doesn't work: no power, brightness is 0%
There is a laptop - Dell Inspiron 1545.
A problem is a brightness of a screen is 0% (when BIOS starts, Windows works - all time). I can barely see a picture on a screen at a big angle (it seems like ...
0
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3answers
78 views
Laptop Power Supplies- AMPS Confusion
I've got an old fujitsu Siemens AMLO pro v3515 notebook with a dead power adapter to use it. The power measurements of it is
Power Details
Output Power (Max): 65W
Output Voltage: 20V
Output ...
0
votes
0answers
20 views
/sys/class/power_supply files become zero until reboot to OS X and back to Linux
This is on a Macbook 2,1 dual booting Arch Linux and OS X Leopard.
I use a conky script to disply my battery percent with:
${battery_percent BAT0}
Recently, it switched from displaying coherent ...
1
vote
3answers
187 views
Asus P8P67 Rev. 3.1 Motherboard issues powering on and saving settings
Edit: New Information
Have some updated information from the old question below:
So basically my issue right now is somewhat similar, but I've been able to rule out a couple of things. I don't think ...
0
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0answers
24 views
Is it possible to have a bus-powered Thunderbolt device which also supports daisy chaining?
I've noticed a new Thunderbolt drive which supports daisy-chaining but not bus power [1], and a competitor's Thunderbolt drive which is bus powered but only has one Thunderbolt port [2].
I'd like to ...
2
votes
1answer
60 views
How to find out if router supports power over Ethernet (poe)
I have the Asus RT-N56U router. How do I find out if the router supports POE? A Google search for "asus rt-n56u power over ethernet" did not produce any meaningful results: http://goo.gl/qqNFm
Also ...
3
votes
1answer
53 views
Why doesn't a phone li-ion battery die for 5 years and a pc li-ion battery dies in 1-2 years? [closed]
WHat is the major factor? heat?,size? consumption style like full discharge?
0
votes
1answer
67 views
Computer Restart : it shutdown but it never power up
I am seeing an used desktop computer with MSI motherboard and runs Windows XP,
the problem is when i restart the computer using Windows >> shutdowns >> Restart, the computer shutdown but never power ...
1
vote
3answers
46 views
Computer Sometimes Failing to Start
The Problem:
Every now and then my computer will fail to start when I press the power button.
The Situation
When the power button is pressed the system seems to power up. All lights turn on, USB ...
0
votes
1answer
45 views
Power Cord Ratings (Volts, Amps) for Monitor?
I recently bought the HP w2228h monitor on the cheap locally. It didn't come with a power cord and I was amazed at the price of the HP 8121-0739 power cord that originally comes with it.
I am not ...
10
votes
2answers
305 views
Is there a USB wall charger that “just works” with every device?
Background
Almost every gadget today is charged over USB. It seems like a good idea since everyone has a computer with USB, but fumbling behind a computer and making sure that computer is on and does ...
0
votes
2answers
43 views
5V external input on motherboard usb ok?
Embedded PC with many USB devices seem to have been exposed
to overload or short-circuit. (some ports only deliver ~1V)
Q: Would it crash the MB if regulated 5V is led from external PSU
to the ...
1
vote
0answers
52 views
How Can I keep my Computer from going to Sleep when certain programs are running but let it go to sleep when those program are not running ? [closed]
Possible Duplicate:
Prevent Windows 7 PC from sleeping while a download is in progress
"How Can I keep my Computer from going to Sleep when certain programs are running but let it go to ...
2
votes
1answer
93 views
Computer doesn’t power on when a video card is inserted [closed]
I have a computer (MSI 845PE Max mobo) that doesn’t start (fans don’t spin up) with a video card inserted in AGP slot (it does start when the AGP slot is empty). That didn’t happen yesterday. It ...
1
vote
1answer
53 views
How to measure the power consumed by a program in Windows? [closed]
Possible Duplicate:
Windows application that debug battery consumption
I have the following dilemma:
I am testing several programs which have power saving features that can be used on ...
13
votes
5answers
1k views
How much power the system is REALLY consuming?
I suspect that my ATX case's power unit from China provides FAR LESS power than it's supposed to. Is there a way to see (in real time) how much power the whole system is trying to consume and how much ...
2
votes
2answers
71 views
Determine when Linux lost power
I returned from a trip and noticed that my apartment had lost power. I am currently running a small Linux server (Ubuntu 8.04) and had to boot it back up.
Is there a way to read some log and see ...
3
votes
2answers
84 views
Is there a way to power down a USB device using software?
Is there a way that I can power off a (specific) USB device completely using software from a Linux machine?
I want to use this to power off (so that the LED is off) a (single) USB stick.
Do you know ...
0
votes
0answers
25 views
I need for my Inspiron N5030 to work on battery, solely
I have this problem with my Inspiron N5030's A/C adapter which comes from Dell. It won't let me run my brand-new laptop without it. The Li-Ion battery doesn't charge either, it's still stuck at 88%. ...
1
vote
2answers
50 views
Issue with Machine, not sure if power supply
Friend of mine has a rig that has just mysteriously "stopped working". I wasn't there when this occured, so I've decided to take a look at it.
Upon trying to turn it on, the fan on the back of the ...
3
votes
2answers
114 views
How much CPU power and RAM will I need in a 10 disk array?
I'm planning to build a low-power storage server with many drives.
Can I put an Atom based board into this machine? Or even ARM? Will a weak CPU cut into my throughput? What about RAM?
I am planning ...
6
votes
1answer
111 views
External “power brick” style PSUs - are they reliable enough?
Keen to build a quiet, power-efficient always-on HTPC/media server, I've been looking at mini ITX boards that have their own external power-brick style power supply. These appeal because they are ...
3
votes
1answer
158 views
Why does my computer not boot?
When I turn on my computer, it doesn't boot. It does not even give the single "beep" that it usually does while starting. It does not show the BIOS start screen, it does not start reading from the ...
0
votes
1answer
26 views
computer goes to sleep / freezes even though I have high performance setting set in Windows 7
So my computer should not be going to sleep but I think it is because when I play a flash movie on videoBB or another similar site for longer than 30 mins or so the computer fan goes off and even ...
0
votes
2answers
118 views
How do I disconnect the power from a USB host port from the shell?
How can I from the shell remove and apply USB power to one of the host USB ports in my machine?
4
votes
2answers
81 views
Will a 300W UPS work fine if my PSU is 500W?
I am getting a UPS (Uninterrupted Power Supply), currently here are my options:
http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=BE500R-PH
...
4
votes
2answers
136 views
How can I force an internal hard drive to power on or off when I want?
Obviously there are power management settings which Windows uses to determine when to power a hard drive off, and when to power it back on again. Powered down I assume doesn't mean absolute zero ...
1
vote
1answer
68 views
Where to plug in the PowerSwitch on an ASRock K7S41GX motherboard
I have an ASRock K7S41GX motherboard.
I don't know where to plug in the power switch.
1
vote
1answer
48 views
Tracking a short
I was looking at a thread posted on earlier Laptop charger dying after plugging in?
talking about a power issue with a laptop or the charger. I have done some testing and concluded that the short is ...
1
vote
2answers
71 views
Strange laptop wakeup. Why does it happen?
Here is what happens:
I put my laptop to sleep.
I turn on my light
My laptop wakes up.
Why does this happen?
BTW, they are both connected to the same power strip. Could my laptop recognize ...
0
votes
0answers
33 views
Overclocking and power usage on an i7 Sandy Bridge processor
How much of an impact does overclocking have on Sandy Bridge i7 processors? Does it drastically bump up the wattage, or does it only have a moderate impact?
0
votes
2answers
82 views
After replacing CPU cooler, PC doesn't power on
So I bought a new AC Freezer 7 Pro to replace the stock cooler.
I fixed it on, and at first it only works for a few seconds, then shuts off. Of course, I realised it was the thermal shutoff. I saw ...
1
vote
0answers
109 views
How can I get or make a USB to SATA-power cable?
I have a 2.5 inch SATA SSD that I want to power from an internal USB port.
The SSD requires 5 volts, so I see this as being possible.
I already have the data connection for the SSD, I just need to ...
3
votes
2answers
109 views
Computer sponteously reboots when doing heavy file copy to/from disk
I've been fighting with this problem for the last 3 weeks where my machine will just instantly reboot. No BSOD, and when i checked the event log all that was reported was the generic "Kernal-power" ...
0
votes
1answer
116 views
How to fix Asus Eee PC 900 startup issues after failure?
My Asus Eee PC 900 shows no signs of life.
I push the power button and get no response from anything. No lights, no power, no boot-up screen.
It has been like this since I received it from a ...
1
vote
2answers
76 views
What is power factor correction, and why should I care about it when shopping for a power supply?
Many power supplies advertise 99% active or passive power factor correction in their supply ratings. I think that's supposed to sound impressive because it's 99% for some reason, but the little bits I ...
0
votes
1answer
174 views
Why would 80PLUS not certify any 115V power supply as “Titanium”? [closed]
80PLUS.org lists a set of efficiency requirements for correct supplies for both 220V and 115V main power voltages. However, for the 220V ratings, all manufacturers are held to a slightly higher ...
0
votes
0answers
28 views
What software issues are caused by power failure shutdowns? [closed]
Possible Duplicate:
Is unplugging the power from a PC in standby or in normal mode bad for it?
I have a laptop that had a failing battery. The battery life was very bad and if I ...
0
votes
0answers
17 views
Power Usage for a Dell Dimension 2002 [closed]
How much power in dollars (I would just like a rough estimate) would a dell dimension from 2002 use every 24 hours? A year? It would not use a monitor.
1
vote
2answers
70 views
pc watts usage comparison
If I have an atom pc drawing 40 watts at peak usage, does that really mean it is consuming less power than a 60 watt lightbulb?
I'm no electrician, and I have no knowledge of how electricity is ...
1
vote
1answer
46 views
Laptop ethernet port blinks once when plugging in power
Weird question. On my Acer Aspire 5750, when the machine is powered off and I plug in the power cord the ethernet port (located right next to the power jack) blinks green once. This does not happen if ...
1
vote
2answers
100 views
USB Power off on shut down or Eject
Done quite a bit of searching and found lots more questions but so far no answers. I need to shut down power to a USB hard drive when the computer shuts down. I understand why Vista and Windows 7 both ...
