All Questions
Tagged with power motherboard
173
questions
0
votes
1
answer
59
views
Can I leave a graphics card inserted but with power disconnected?
I'm not ready to pull my ancient graphics card out of the slot yet, but I want the PC to ignore it completely and use the iGPU solely due to booting and GPU initialization order issues. (And no, I can'...
- 93.8k
0
votes
0
answers
23
views
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
169
views
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
-2
votes
2
answers
8k
views
What power cable to use for motherboard 24 pin or 8 pin where I have both?
I have motherboard ASrock H470 with both 24 pins and 8 pins slots for power.
I have power unit which has both 24 pin and 8 pins cables.
Do I have to connect both cables?
- 523
0
votes
3
answers
6k
views
Are there 3-pin to 2-pin power connectors for motherboards
My (old) case front panel has a 3-pin power led connector (inc. one empty slot in the middle).
My (new) motherboard has a 2-pin power led connector.
How do I connect the two? If I try to connect the ...
- 271
2
votes
1
answer
9k
views
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
- 1
3
votes
2
answers
706
views
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
0
votes
0
answers
101
views
CPU speed drops to 0.61/0.79GHz and remains there whenever I unplug the charger
My laptop is a dell latitude e6520
Windows 10 Pro 21H2
Intel Core i5-2520M CPU @ 2.50GHz processor
and a 12 GB RAM.
I recently changed it's motherboard and whenever the laptop's charger is unplugged, ...
0
votes
0
answers
181
views
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 ...
- 1
0
votes
1
answer
658
views
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
0
answers
140
views
Motherboard won’t turn on with front switch, but works when I short it manually with a screwdriver
I have a Asus TUF X570 (WiFi) board that I've been using for over a year without issue. I was adding a second m.2 SSD and suddenly could no longer power on using the front panel power switch. Removing ...
- 56.1k
2
votes
0
answers
2k
views
Do CMOS batteries drain faster depending on how long and often you use your PC?
I have recently been thinking about how the lifetime of CMOS batteries is related to the time percentage during which one's PC is up. Obviously, the amount of power consumed by CMOS boards is ...
0
votes
1
answer
69
views
Dead? Motherboard
Ok, let's begin. A couple of weeks ago, My Lenovo Thinkpad X300 (2008) crapped out suddenly. I opened it up and inspected the components, nothing. Upon reopening I noticed that the DC jack was ...
- 1
1
vote
1
answer
1k
views
What are these components around the CPU socket?
Right next to the CPU socket, on the left and the top, you can first see a row of silver caps and behind these are little dark grey "boxes". What are those components and why do they get ...
- 130k
1
vote
1
answer
8k
views
Power rating of USB 3 type A and type C
Almost all modern motherboards have a type c connector on the I/O Shield. I checked many manufacturers but they do not state how much power delivers through this tyoe c connector.
I know a normal USB2 ...
- 7,907
0
votes
2
answers
702
views
Laptop shows no sign of life: motherboard or power supply issue?
My Toshiba Qosmio x505-q890 laptop has suddenly stopped powering on. Symptoms are the laptop simply does not respond to the power button when pressed, but when the DC adapter is connected the adapter ...
1
vote
1
answer
267
views
100% errors from memtest86 after series of power surges; more likely to be motherboard or RAM?
The power grid where I live is unreliable, and we frequently have interruptions (and presumably surges). I usually have a UPS protecting my desktop computer, but my prior UPS developed a fault and I ...
- 31.7k
0
votes
0
answers
320
views
ASUS motherboard delayed power on, is this normal?
My new ASUS Prime Z590-A motherboard has a delay when I press the chassis power on button.
After I press it, I see some leds light in the mobo, but then a 3-4 sec delay follows, not even the PSU (at ...
- 488
0
votes
1
answer
85
views
Any idea what is going on with the power button here? When the computer is on, sometimes the button restarts it. Sometimes it keeps it off
ny idea what is going on with the power button here?
I have made these two videos.. no need to watch them all start to finish..
https://www.youtube.com/watch?v=qcC84J5jCa0 (weirdpower) 5min
https://...
- 1
0
votes
1
answer
714
views
Can't start desktop PC unless motherboard is plugged in to PSU with PSU on
A weird issue appeared on my desktop computer. After a few reboots via reset button in a row (was fiddling with bootable USB stick etc), PC refused to boot. Thought it was the PSU, but no. Then after ...
- 1
0
votes
1
answer
1k
views
Computer doesn't turn on when pressing the power button
It's not that it doesn't boot, but that the computer simply doesn't turn on. Absolutely nothing happens when I press the power button. Strangely enough, at some point it does turn on. This time it ...
- 101
0
votes
1
answer
473
views
Adding a power button to laptop for using as SBC
My laptop power button is included with the keyboard. And when I remove the keyboard from the keyboard port of motherboard, there is no way to start the laptop.
The reason I want to remove keyboard is:...
- 106
2
votes
0
answers
1k
views
Toshiba laptop turns on then off after 5-10 seconds, with or without AC charger or battery connected
My relative has a Toshiba Satellite C50-A-19T laptop with an Intel Celeron 1005M. She left it for a bit to do some work, with the laptop just sitting there with Chrome open. Then, Windows decided to ...
- 135
1
vote
1
answer
58
views
Surge protector behaving strangely
I just bought this surge protector which has the master/slave function, so that it disables some plugs (2 monitors and 2 speakers) when I turn off my PC. Everything is working fine except for one ...
0
votes
0
answers
7k
views
Is the KTS lithium battery for my motherboard broken, or is it something else?
For the past few months, I have been having some problems with my PC that involve it not powering on when everything is connected as it should be, e.g. power cable plugged in, power supply switched on ...
0
votes
1
answer
719
views
Trying to better understand how motherboard USB 2.0 and USB 3.1 Gen1 ports max combined APS is calculated
So, I've searched dozens of similar questions on SuperUser and they all seem to focus on MAX power output on a USB PORT and do not mention anything about the total max a motherboard will be able to ...
- 1
0
votes
2
answers
9k
views
Computer will not turn on after replacing CPU, PSU, and motherboard
I recently replaced the PSU, motherboard, and CPU after my computer shut off randomly. Now when I try to turn it on, I get no response.
I've tried:
Taking out the RAM
A CMOS reset
Swapping out the ...
0
votes
1
answer
2k
views
Why does my mouse and keyboard backlight flash even though my computer is switched off?
Both my mouse and keyboard are backlit.
Normally the backlight is on when the peripherals are connected to a powered on computer and off when the peripherals are disconnected or are connected to a ...
- 12.9k
0
votes
1
answer
1k
views
Computer turns on and then off after a few seconds when front panel is connected, but works normally without it
My computer is almost 3 years old by now, and last night I noticed it turning on and off randomly for a few seconds, multiple times. I tried to turn it on to investigate, but it didn't react to the ...
CommunityBot
- 1
1
vote
1
answer
8k
views
PC Turn on when connected to power without pressing power button
I need some help with my strange behavior of my new PC.
My setup is
AMD Ryzen 5 3500X
MSI B450-A Pro MAX
Colorful igame gtx 1660 super
Klevv bolt-X 2x8 GB
PSU be quiet system power 9 500W
The problem ...
