All Questions
Tagged with power-supply power
468
questions
1
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How to replace HP SFF power supply of 240W by a more powerful power supply?
I have an HP Compaq Elite 8300 PC SFF, with this power supply: 613762-001. The documentation says that the current power supply is (only) 240W.
I'd like to increase performance by installing a 750 TI ...
CommunityBot
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1
vote
1
answer
81
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Is it safe to connect only 2 PCIe 8-pin power connectors to triple PCIe 8-pin to 12VHPWR adapter?
I have a GPU with a 12VHPWR connector that came with a 3xPCIe 8-pin to 16-pin 12VHPWR adapter cable, but my current PSU only has 2 PCIe 6+2 pin connectors on the same cable. Is it safe for me to power ...
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-3
votes
1
answer
41
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Laptop needing a more powerful power supply?
I have chosen a laptop to use both for university use and gaming: Lenovo Yoga Pro 9 16IMH9. It is quite expensive and has great specs and features, but unfortunately has a major flaw.
According to one ...
- 31.2k
0
votes
1
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30
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What happens if during RAR compression the laptop runs out of battery?
I was compressing a large file using RAR, so it took quite a while. During the compression at some point I had to unplug the computer and let it continue with battery only. After a few hours when I ...
- 464k
0
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0
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23
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Can I swap the power cables for the motherboard at the PSU socker?
The last time I built a PC was when the Pentium was the new hotness. However, I have decided to build my own instead of buying a new PC.
I'm a bit confused with this modular power supply cable ...
- 111
0
votes
0
answers
26
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Display turning off causes power failure
I built a new pc and after adding the GPU, noticed that pc loses power shortly after display is turned off by power options due to inactivity. I used the same pc with the igpu only for a week where i ...
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2
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6k
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Battery not charging, laptop only works when plugged
Yesterday my battery was working fine (for an old computer). It could sustain a normal usage for three hours at least. Today I have the following symptomas:
I noticed that it didn't charge, even ...
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0
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1
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74
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Laptop is not charging when plugged and very laggy
I accidentally connected a Lenovo charger to my Dell laptop. After I realized this, I disconnected and connected to its Dell charger but now it doesn't charge. The laptop still works when plugged in ...
CommunityBot
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2
votes
1
answer
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Adding another UPS battery in parallel, to increase runtime/VA capacity
Can one parallel two identical batteries and connect to the UPS, and will it act as a single battery of double the capacity? Or is there a problem electronically with it?
According to this answer, ...
CommunityBot
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2
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2
answers
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Melting/smoking universal AC adapter
I own a Samsung RV520 for 2 years now and 3 months ago my AC adapter stopped working and had to replaced. I went to the closest computer service and they gave me an universal AC adapter. Now, the new ...
- 56k
0
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0
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168
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After unplugging my PC from the outlet, sometimes it won't boot for a long time
Before I go to sleep, I unplug my PC from the outlet, due to concerns about power spikes or something of the sort frying my computer. However, sometimes, when I wake up and plug it back into the ...
- 148
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1
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220
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Laptop power button not working but battery discharge pinhole button is starting the computer, what might be the issue here?
I have an Acer Aspire A515-51G, the issue is suddenly the power button has stopped working, the battery is charging, but the pinhole that they have given; pressing it, actually starts the computer; ...
CommunityBot
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0
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1
answer
172
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Will this configuration supply the new gpu (Nvidia RTX 4000 ada) with too much power and damage it?
I just purchased an Nvidia RTX 4000 and it came with a 16(12+4) pin to 8 pin pcie adapter. Unfortunately it is only 4 inches long. The way my tower is configured it will not reach anything but the ...
- 56k
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1
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261
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My computer runs fine on inverter power but can't turn on from off state. Will using an UPS between computer and inverter fix the issue?
A 900 watt sine wave inverter (with battery) is connected to mains. The PSU of my computer is 1000 watts. When there is power outage, my computer runs perfectly fine. But if it is already off, I can't ...
- 31.2k
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0
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Power supply problems
I recently had a laptop that would not boot a range of things.
It would not boot the existing installation of windows for the SSD.
It would not boot Ubuntu from a USB.
It would not boot the OEM ...
1
vote
4
answers
4k
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PC restarts on power outtage despite having a UPS
Unfortunately where I live I do not have 24/7 electricity.
My new PC rig which is considered to be a high-end(gaming)
system is connected to a brand new APS/UPS that have these specs:
DC-AC ...
0
votes
1
answer
251
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Dell Inspiron 15-5558 - A battery with low health is detected, charged, but not used
I've been using Dell Inspiron 15-5558 laptop for more than 8 years without replacing the battery (cause I've been mostly using AC charger only) and today I've encountered an issue when the laptop has ...
CommunityBot
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1
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1
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6k
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Is it dangerous to charge a laptop via an external charger and a docking station?
If this is not the right place for this question, sorry and please direct me to the right place!
I have a Dell Precision 5540 laptop, which has a 130W AC Adapter.
Input = 100-240v~1.8A 50-60Hz
Output =...
CommunityBot
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1
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UPS suddenly restarting, what might be the cause?
Background
My UPS has a backup of about 10 mins, thus, it's battery life is good. No problems detectable.
My CPU, on the other hand, is also fine with no major hardware problems (as it looks so) ...
- 56k
0
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0
answers
346
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100w USB-C to DC power adapter charging issues
I've been encountering some issues with a custom charging setup for my Razer Blade 15 laptop. My blade is a 2020 model that does not support USB-C charging. I wanted a more compact solution than the ...
2
votes
1
answer
9k
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PC building: Do you have to plug in the 4-pin CPU connector?
My motherboard has a single 4-pin power connector next to the CPU. My power supply has a 8-pin CPU power connector but not a 4 pin one. Instead of going out and buying a 8-to-4 pin CPU power adapter ...
CommunityBot
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1
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1
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576
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Why is there a seemingly big difference in power supply input and output watts?
Looking at a power supply like:
I notice there seems to be a big difference between the AC input watts(240V x 5.5A = 1320W) and DC output watts (860W)
I read on this answer that Virtually all power ...
- 93.7k
0
votes
1
answer
69
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Laptop power button seems to be disconnected
I've always had this issue with my laptop where it needs the power to be drained from the motherboard before it can start normally (7 year old laptop). And I've learned to do the whole, pressing down ...
CommunityBot
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0
votes
1
answer
4k
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Computer not starting due to humidity?
A while ago I've asked a question about my computer not starting when pressing the power button. There has been a new developement: I've noticed that my computer won't start when there's been heavy ...
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votes
0
answers
83
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use DC power while plugged in without charging the battery?
I'm aware that keeping the battery fully charged is bad for the battery health. However, I often need to use my computer and it easily consumes a lot of battery power in a short time. (connected to an ...
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votes
1
answer
264
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I have a dead battery and my laptop refuses to come out of power saving mode even while charger is connected
I have an Acer e5-576g laptop. I used this laptop as a PC and it is always connected to AC power. Up until recently my battery even though it was weak worked and because I was always charging it was ...
CommunityBot
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3
votes
2
answers
685
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Laptop turns off suddenly, then wont turn on again
This laptop started to present this problem in which it turns on briefly for about one minute, then it suddenly turns off and after that wont turn on again. If I wait about one month or so and try ...
JNat♦
- 243
1
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3
answers
2k
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Laptop charges intermittently
My Lenovo Z-series 51-70 laptop doesn't charge the battery all the time (sometimes it does, sometimes it does not). After long periods of leaving it unplugged and turning the laptop completely off, it ...
- 2,557
2
votes
1
answer
148
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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 ...
- 1
4
votes
3
answers
20k
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What is the max USB cable type-A male to type-c male Volt/current/Wattage possible?
I am struggling to understand USB type-C specifications in terms of power supply,
It took me a lot to figure out about USB data bandwidth but now that type-C is used to charge mobiles I need to learn ...
- 268
16
votes
6
answers
112k
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How much power output can an 8-pin to 2x 6+2-pin connector output?
A common cable included in modern modular PSU's is the 8-pin to 2x 6+2 pin. However, based on reading (such as PCI-e Power - Does 6 + 2 Equal 8?) an 8-pin is effectively the same as a 6+2 pin. If that'...
0
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0
answers
290
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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 ...
0
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2
answers
3k
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would disabling a GPU in windows reduce a laptop's power consumption?
So let's say I have a laptop (ThinkPad P15 Gen 2) with a 230W power adapter, a 140W NVIDIA RTX A5000 Max-Q 16GB GDDR6 and an 11th Generation Intel Core i9-11950H Processor with vPro. Let's also say I'...
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1
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63
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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 ...
- 3,647
0
votes
1
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76
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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 ...
- 43.1k
0
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1
answer
271
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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 ...
- 20.2k
3
votes
2
answers
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How can I prevent my PC from tripping the ARC fault breaker when turning it on?
I'm in an apartment with a 15 amp circuit that has an ARC fault breaker. My PC trips it 95% of the time that I turn it on. It does this even with everything else in the room unplugged.
Also the PC ...
30
votes
5
answers
12k
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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 ...
- 437
1
vote
1
answer
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Is laptop charger polarity standardized?
Chargers are often advertised with only voltage, amps and the size of the cylindrical connector. In theory you also need to also check polarity of the pins.
I have seen many warnings of home made ...
CommunityBot
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0
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890
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My HP-Z440 Tower workstation does not power on
I have a weird issue. My HPZ440 workstation does not power on. When i hand it over for troubleshooting, the guy tells me that it doesn't have any problem and is working fine. Then it works for a day ...
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-2
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2
answers
779
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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....
- 4,744
0
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1
answer
187
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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 ...
- 4,744
2
votes
1
answer
260
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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 ...
1
vote
0
answers
796
views
Laptop not charging consistently on Windows but does on Ubuntu
Setup: I have a Lenovo T440s running Windows 10 which requests 20V and 2.25A/3.25A and a charger providing 20V and 2.25A.
I have been having this problem for a while. Essentially, when I plug in the ...
0
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1
answer
647
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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'...
- 458
0
votes
1
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2k
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Slow Wattage of Thinkpad T480 Charger
Here are the problems I have with my T480:
The "Slow Charger" warning appears in Windows. I tested several chargers on Windows and Linux that support at least 65W, but Lenovo Vantage and ...
0
votes
0
answers
66
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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 ...
- 847
0
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3
answers
8k
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Lower power output when charging devices, is that ok?
Similar question to here: Laptop power supplies, does current matter?
According to the answer, using a lower rated power supply/adapter could cause several problem such as melted power supply/cord.
...
- 121
1
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2
answers
388
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What Sized Cables Are Most Commonly Used To Connect To PSUs?
Most all wall plugs in North America are type A or type B.
What type of cable end usually plugs into an aftermarket PSU?
I am pretty sure it is the C13 cable, but not many PSUs make this ...
CommunityBot
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1
vote
0
answers
22
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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 ...
- 74.2k