While programming a P&F sensor, a 24v surge back fed into my laptop through the USB cable, causing it to suddenly power off. I have attempted multiple times to turn it back on without success. Are there any potential solutions to power up the laptop again? Thank you.
If your laptop is not powering on, a common troubleshooting step is to remove the battery and all power sources for 5 minutes before reinserting them and trying to turn the laptop back on. If the laptop successfully powers up, it is advised to immediately make a backup of all your work as a precaution, as the issue may recur. -James
I appreciate your suggestion, Mr. James, and I will definitely give it a try.
It is likely that there is damage to the motherboard. I am curious if using a USB hub could have functioned as a protective fuse in this situation.
It sounds like a power surge might have damaged some components in your laptop. First, try removing the battery and power cord, then press the power button for about 20 seconds - this can potentially discharge any residual energy which may be causing some sort of short. If that doesn't work, it’s likely that your machine has suffered hardware damage, most probably to the motherboard. In this case, I'd recommend taking it to a specialist for repair. In the future, consider using a USB isolator when connecting hardware to your laptop to prevent such issues.
That certainly sounds like a challenging situation! I'd suggest first to unplug everything from your laptop, including the power cable. Then, hold down the power button for about 30 seconds to discharge any stored energy. After that, plug only the power cable back in and give it another try. If it still fails, the motherboard might have gotten fried from the voltage surge. At that point, a professional evaluation might be needed, or consider troubleshooting with another motherboard if you're comfortable doing that yourself. Remember, always ensure the power output from any external devices matches the voltage input of your laptop to avoid such mishappening in the future.
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Answer: 1. Q: What should I do if my laptop suddenly powers off after a 24v surge through the USB? If your laptop shuts down due to a 24v surge, try the following steps: unplug the laptop, remove the battery (if possible), hold down the power button for about 30 seconds, reinsert the battery (if applicable), and plug the laptop back in to see if it powers up. 2. Q: Why did my laptop shut down after a 24v surge through the USB cable? Laptops have built-in surge protection mechanisms that may trigger a shutdown to prevent damage from power surges. The 24v surge could have activated this protection feature, causing your laptop to power off.
Answer: It is not recommended to use the laptop immediately after a 24v surge. You should attempt to power it back on following the proper steps and monitor its performance. If the issue persists or if you notice any unusual behavior, it is advisable to have it inspected by a professional technician.
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