Did you buy a genuine Dell power adapter (charger)? If it's not a Dell power adapter, it may not charge the battery and the system may not work at full power. If it is a Dell power adapter, check if its LED lights up when you plug it into the wall. And, does the light remain lit when you plug it into the laptop? If it is a Dell power adapter and the light goes out when connected to the laptop, then it is likely a failure of the charging jack or the charging circuit on the motherboard.
Have had this laptop for roughly 2 years. Never had a problem until recently. Original charger got damaged and wouldnt charged, so i bought a replacement. Volt and wattage match the computer (90W, 19.5-4.62A). Upon starting up, i got a warning, saying the AC adapter couldnt be determined. I clicked continue, just to find that my computer is stuck at 0%. It says charging, yet its not. Been plugged in for hours, still at 0. Second i unplug it, it dies. Works fine while plugged in, but annoying i have to keep it in an outlet.    Any solutions? Have tried the following: -Cleaning charging port/adapter -Changing wall outlets -Changing chargers -Inspecting computer/charger for damage, havent found anything   Nothing seems to work, so im looking forward to hearing any tips/tricks. Thanks!
Dell Inspiron 7591 stuck at 0%, but says its charging