My Laptop was working fine, but today I tried to turn it on, all I get now is the soft noise. When it press the power button the noise comes slightly more notable. The system will not come on at all. I removed the battery and held down the power button for 30 seconds then put the AC plug into the laptop into the laptop, but still nothing but this noise.
Has anyone heard about this or know what is the problem is?
Welcome to the community. I am sorry to read that you are having this problem. Check the AC adapter, is it showing power? AC Adapters have a power indicator either on the brick or the line from the brick that connects to the PC. If it isn’t showing any power try a different outlet. If it turns on all of a sudden you may want to check that outlet. If the AC Adapter does show power disconnect it from the notebook. Reseat the power cable from the wall socket. Then connect the adapter back to the notebook. If the power indicator on the notebook all of a sudden goes out while being connected back to the system then the system or power board may be shorting out.
Once you have verified that the problem is not the AC adapter then this is not likely a power issue. One or more other components on the system may be failing. The next step is to disconnect all external components. USB devices, fire wire devices, keyboards, mice, external drives, printers, docking stations, even the battery. With just the AC adapter attached see if the system powers up. If all of a sudden everything works right, something you just disconnected was shorting out the system. Plug one device back at a time and reboot. The item that you just connected when the system stops working again is likely the culprit.
If removing all the external items fails to work then the next step is to remove internal items. I am not actually talking about opening the chassis, but removing the items that connect outside of the chassis. Examples are optical and hard drives for some systems, system memory, wireless cards, and modems. Looking up the service manual at support.dell.com will give specific instructions on how to remove these items. Reconnect the AC adapter and power up the system. A system with no memory should give specific no memory error codes. Is there a change with the error codes? Are the LEDs lighting up now when before they were dark?
Shut the system down and return one of the memory DIMMs back in one of the sockets and then power it back up. If all of a sudden you are able to get to the bios or the diagnostics? The DIMM is likely fine. If the system has two DIMMs then swap them out. Does the problem return? Then the DIMM that you just installed may be defective. If the system posts again, shut the system down and take the DIMM in the system now and plug it into the other memory slot. Try it and see if it makes a difference. The idea here is to test all DIMMs and all DIMM sockets. This can point out that one or both of the DIMMs or DIMM sockets are defective. If reseating the memory doesn’t make a change on the way that the system acts then typically the problem will be with the system board or possibly even the processor and they may need to be replaced.
If you are now able to power up the system after reseating the memory then the next step will to connect the hard drive and see if the system powers on or boots. If not then the drive may be the defective device and will need to be replaced. If the system is now booting, connect each of the remaining drives, wireless and modem cards one at a time rebooting each time and see if the problems return. Using process of elimination in this way will often indicate what part was causing the problem. You may even find that the problem was caused by a part not being connected well and that you have repaired the system.
I hope that this helps and please let me know what you find out.
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I did everything down to the DIMMs. I have to hold off on that, because I don't have any experience with opening laptops. Again, the power light on the laptop doesn't come on. There was a lighting storm yesterday, and killed the power for a few seconds. I think that killed the motherboard. I'll take it to the shop , check out the insides.
I am sorry to read about the storm. That could certainly cause the problem. Please let me know what the repair shop found out.