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My desktop has suddenly developed a quirk where, when I plug in my cellphone to charge via a USB cable, it immediately powers off. I have been putting the cellphone (Galaxy S5) on charge this way for several years without any issue. My first thought was that the cable was bad so I replaced the cable with a brand new, never used cable. That seemed to solve the problem for several days until it just did the power down thingy again!!! Any ideas as to what has changed on the desktop? Additional info on the desktop: Intel Core i3 processor Asus H81M-Plus motherboard Corsair CX600M power supply Windows 10 Professional | ||
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| Member |
The motherboard may have an issue. -c1steve | |||
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Member |
My first thought would be to pick up another power supply and try that first. It is the cheapest and easiest to do. USB is powered off the 5V rail. I have had more than a few "odd" issues come across my bench over the years because the 5V crapped out. Computer will still basically work fine because most of the "important" bits are run off the 12V side of things. My second thought could be just a bad USB port. Is it one of the case mount ones or is it directly off the motherboard? | |||
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Member |
You have any other USB accessory you could plug into that port to see if it also caused the same result? Maybe a WD backup drive or a USB jump drive? I'd try that first given its a free test. Does the PC shut down if you move the USB cable for your Samsung phone to another USB port? ----------------------------- Guns are awesome because they shoot solid lead freedom. Every man should have several guns. And several dogs, because a man with a cat is a woman. Kurt Schlichter | |||
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| Member |
The "new" cable was plugged into a USB port on the back of the computer. I moved it to a port on the front of the computer and so far, so good. I am going to try yet another port to see what happens. | |||
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| Member |
I also tried a separate USB hub plugged into a port on the front of the computer and it did not power off when I plugged the cellphone in. When I Googled about this issue a few of the hits suggested that it could be an issue with the power supply. Looking a bit further, it seems that my power supply has a less than sterling reputation for reliability. Interesting that one of the forum responses also said it is potentially the power supply. After this experimenting around with other ports, I am really thinking the easiest conclusion, and the simplest, is the USB port on the back of the PC is bad. Of course, if it happens again, toss the power supply? | |||
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Political Cynic |
mine was powering down at random - not because I had plugged in a device to a USB port turns out that the power supply brick was getting so hot it was thermally overloading itself got a new brick, problem gone [B] Against ALL enemies, foreign and DOMESTIC | |||
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Member |
I'd investigate purchasing a Corsair power supply just to have on hand in case that one craps out. This one is on sale... https://www.newegg.com/Product...Item=N82E16817139234 "If you’re a leader, you lead the way. Not just on the easy ones; you take the tough ones too…” – MAJ Richard D. Winters (1918-2011), E Company, 2nd Battalion, 506th Parachute Infantry Regiment, 101st Airborne "Woe to those who call evil good, and good evil... Therefore, as tongues of fire lick up straw and as dry grass sinks down in the flames, so their roots will decay and their flowers blow away like dust; for they have rejected the law of the Lord Almighty and spurned the word of the Holy One of Israel." - Isaiah 5:20,24 | |||
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quarter MOA visionary |
The Event Viewer is your friend or so they taught us at computer skool. See if there are any related events leading into the shutdown that might give you a clue. | |||
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Few years ago when I play graphic intent online game the computer will shut down with no warning and restart. Turn out to be the power supply is not able to support the monster graphic card. | |||
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| Member |
How old is the pc? We had an 8 or 9 year old HP that started to power itself off from a few minutes to 10-15 minutes after being powered on. It turned out that some of the capacitor's on the motherboard, the one's that look like little beer cans, were ruptured. The pc repair shop actually diagnosed the problem over the phone before he even took a look at it, said that the newer operating systems and programs, etc., that were eventually loaded onto the computer over the years, resulted in it working harder and hotter that it was designed to do, thus resulting in the failures. We replaced it with a Dell. So far so good! __________ "I'd rather have a bottle in front of me than a frontal labotomy." | |||
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| Member |
Ports on the back are likely directly connected to mother board while ports on front are connected to a wire header. They are usually separate devices on the motherboard, so separate (internal) power lines and failures usually don't take both out. While it's possible that the power supply is the issue, it's less likely since it's feeding both USB hubs from the same 5V rail. Corsair CX series is pretty respectable, but anything can fail. I have CX430 & CX750(?) that have run for years. Probably the motherboard is getting ready to croak. Capacitors in the power conditioning section of the motherboard failing over time is pretty common. | |||
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| quarter MOA visionary |
Is it when you just plug in the cable or when the device is attached too? What about any other device plugged in? Is it just one port or any/all of them? IF it is just ONLY when you try to charge - I'd just charge with an alternative source. | |||
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| Member |
It was happening with the cable already connected to the USB port and then when I would plug it into the phone it immediately powered off. I think I have isolated the issue to just a bad USB port because I have not been able to duplicate the issue using other USB ports on the PC. I am also using some software that monitors the heat on the processor. Heat does not seem to play into this because the software shows the heat to be pretty normal. | |||
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| quarter MOA visionary |
Exactly how to troubleshoot > isolate not random thoughts. Whoever suggested monitoring cpu temps for this was just throwing darts. Glad you figured it out. | |||
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