Win7 Power Supply Not Detected

TAxxOUTBR3AKxx · 11 Nov 2013

I'm running my Windows 7 x64 on an Alienware M17x laptop. My computer recently disconnected from it's power supply source to run on battery because the power supply cable unplugged. Immediately, the computer attempted to hibernate because the battery is bad. I then plugged the cable back in and the computer woke back up.

This is where the problem starts. Windows 7 is still acting like it's running on battery power. The icon even shows a Critical Battery icon (not plugged in) and flashes. It's also running VERY slow like my Power Options were turned to Power Saver. However, my cord IS plugged in, my laptop detects it's plugged in (blue light) but Windows isn't picking that up. My Power Options ARE set to High Performance, but it's still running terribly slow. Restarting the computer doesn't fix the issue. Changing between Power Options doesn't help, either.

This HAS happened before, but took a few days before Windows detected a power supply properly and it ran as normal, but that was almost a year ago. Is there any suggestions as to go about fixing this? It's hard to use a gaming laptop when the OS wants to act like it's running on battery instead of a plugged in power source.

AmericanPharaoh · 11 Nov 2013

Hello,

Try "power-cycling" your computer

Remove battery and AC Adapter, hold the start button for a least 30 seconds.

Restart your computer.

Also, test the voltage output of the AC Adapter.

Make sure your using the correct AC Adapter for your PC.

Buy new battery. eBay has inexpensive replacements.

Hope this helps,
John

AddRAM · 11 Nov 2013

Have you plugged the pc directly into the AC outlet on the wall ?

SandeepP · 12 Nov 2013

TAxxOUTBR3AKxx said:

I'm running my Windows 7 x64 on an Alienware M17x laptop. My computer recently disconnected from it's power supply source to run on battery because the power supply cable unplugged. Immediately, the computer attempted to hibernate because the battery is bad. I then plugged the cable back in and the computer woke back up.

This is where the problem starts. Windows 7 is still acting like it's running on battery power. The icon even shows a Critical Battery icon (not plugged in) and flashes. It's also running VERY slow like my Power Options were turned to Power Saver. However, my cord IS plugged in, my laptop detects it's plugged in (blue light) but Windows isn't picking that up. My Power Options ARE set to High Performance, but it's still running terribly slow. Restarting the computer doesn't fix the issue. Changing between Power Options doesn't help, either.

This HAS happened before, but took a few days before Windows detected a power supply properly and it ran as normal, but that was almost a year ago. Is there any suggestions as to go about fixing this? It's hard to use a gaming laptop when the OS wants to act like it's running on battery instead of a plugged in power source.

Hi TAxxOUTBR3AKxx,

You should perform a power cycle as suggested johnsmith45jock. However, it could be an issue with DC in port on the system which might require replacement.

If the system is under warranty then please contact me through a private message and provide me your service tag and contact information so I may access your system records.

And, if the system is out of warranty then you contact our Expired Warranty Support at the link below:

http://dell.to/12LmNBq

If you have any further queries please feel free to contact us.