Why won't my laptop recharge? Does not even register power hookup.

If your Sam4 ER-390M cash register is displaying a "Warning Power Fail" message, it means that the register has detected a power outage or an interruption in the power supply. Here are some steps you can take to fix this issue:

1. Check the power supply: Ensure that the cash register is properly plugged into a working power outlet. If the power supply is shared with other devices, make sure that they are not causing any power surges or fluctuations.
2. Check the battery backup: The Sam4 ER-390M cash register comes with a built-in battery backup that can keep the machine running in case of a power outage. Check the battery backup to see if it is functioning correctly. If the battery backup is not working, it may need to be replaced.
3. Reset the cash register: Turn off the cash register, unplug it from the power source, and wait for a few minutes. Then, plug it back in and turn it on. This will reset the cash register and may resolve the issue.
4. Contact customer support: If none of the above steps work, you should contact Sam4 customer support for assistance. They can provide further guidance on how to resolve the issue.

It's worth noting that if you experience frequent power outages or power supply fluctuations, it can cause problems with the cash register's electronic components. In such cases, you may need to consider using a voltage stabilizer or a UPS (Uninterruptible Power Supply) to protect your cash register and other electronic equipment.

hi Kaitlyn.
see if this link helps you to find out why.
A100 won even turn on
or this one.
https://community.acer.com/en/discussion/41413/acer-iconia-tab-a100-wont-boot-anymore/p2
or this.
Help my Acer a100 won power up

need to setup network connection, call you isp and they will walk you through it.
if this helps please rate with comment

Is it a replacement battery? Are the specs the EXACT match, DC volts and Amps? Some inexpensive batteries do not work well with your laptop, it's a Connector/ pin thing, they don't communicate with the laptop. Try pulling the plug and drain the battery and recharge. Cycle it a 4 times, drain/ recharge. Does your BIOS setup have a Battery Learning section?

POWER SUPPLY & BATTERY PROBLEM
If the laptop battery is more than 3 - 4 years old then the battery could be worn out. Rechargeable batteries have a finite number of charge and discharge cycles and will lose their charge capacity over time, i.e. won't charge to 100% and gradually the charge reduces until the battery won't charge up at all. OR The battery shows a 100% charge but when the adapter is disconnected the battery drops off to zero capacity in a very short time. If the battery drops to an unacceptable charge level then the battery needs to be replaced. Rechargeable batteries will fail if stored in a discharged state for long periods.

POWER SUPPLY & BATTERY PROBLEM
If the laptop battery is more than 3 - 4 years old then the battery could be worn out. Rechargeable batteries have a finite number of charge and discharge cycles and will lose their charge capacity over time, i.e. won't charge to 100% and gradually the charge reduces until the battery won't charge up at all. OR The battery shows a 100% charge but when the adapter is disconnected the battery drops off to zero capacity in a very short time. If the battery drops to an unacceptable charge level then the battery needs to be replaced. When you connect the power adapter into the laptop, does the power LED light up? If not then - The battery adapter or the adapter's power lead or the laptop's power socket could be faulty. Check power adapter's DC plug that connects into the laptop power socket with a multi-meter, the voltage should be slightly higher than the voltage that is printed on the label on the bottom of the adapter. If the voltage is zero or way below the voltage that is printed on the label then the power adapter is faulty and needs to be replaced. If the adapter is OK then connect it to the laptop and power it up, then look at the power/battery charging LED light and wriggle the power plug in the laptop's power socket. If the power/battery LED light flashes and in a certain position this LED light stays firm, then the power socket is either faulty or it has a dry solder joint where it is connected to the motherboard. This can be repaired but it requires the laptop to be completely dismantled to get at this power socket and repair. If you cannot DIY then I suggest you get a quote first.

POWER SUPPLY & BATTERY PROBLEM
If thelaptop battery is more than 3 - 4 years old then the battery could be worn out.Rechargeable batteries have a finite number of charge and discharge cycles andwill lose their charge capacity over time, i.e. won't charge to 100% andgradually the charge reduces until the battery won't charge up at all. OR Thebattery shows a 100% charge but when the adapter is disconnected the batterydrops off to zero capacity in a very short time. If the battery drops to an unacceptablecharge level then the battery needs to be replaced.

If thelaptop battery is more than 3 - 4 years old then the battery could be worn out.Rechargeable batteries have a finite number of charge and discharge cycles andwill lose their charge capacity over time, i.e. won't charge to 100% andgradually the charge reduces until the battery won't charge up at all. OR Thebattery shows a 100% charge but when the adapter is disconnected the batterydrops off to zero capacity in a very short time. If the battery drops to anunacceptable charge level then the battery needs to be replaced.

Try replacing the batteries. Unless the camera came with rechargeable batteries, they usually have to be replaced. Some pc's do not have the capabilities to recharge batters. Double check your paperwork that came with your camera.

Ifthe laptop battery is more than 3 - 4 years old then the battery could be wornout. Rechargeable batteries have a finite number of charge and discharge cyclesand will lose their charge capacity over time, i.e. won't charge to 100% andgradually the charge reduces until the battery won't charge up atall. ORThe battery shows a 100% charge but when the adapter is disconnected thebattery drops off to zero capacity in a very short time. Ifthe battery drops to an unacceptable charge level then the battery needs to bereplaced.