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Try the following steps to solve it: it of googling on the web and finally found the solution here.1 Turn off laptop.2 Unplug AC power.3 Remove battery.4 Replace AC power.5 Turn on laptop, allow OS to boot.6 Once logged in to the machine, perform a normal shut down.7 Unplug AC power.8 Replace battery.9 Replace AC power.10 Turn on laptop, allow OS to boot. The battery should once again be charging as normal.If it can't still resolve this problem, try a new laptop charger or repair your laptop dc jack.
If you plan to be on a budget for your dell 1525, you may try the following third party charger:
2000-0142 and 2000-0146 are hard drive SMART errors, indicating the HDD will fail.
To boot message about the AC adapter was a BIOS level message that normally appears when a Auto/air ac adapter or other 65 watt ac adapter is used to power the system.
As you say the system is 4 years old update the bios your download link is here! IMP. Be sure to plug in the battery and it should be charges above 10 % and the system should be connected to the mains power supply also ensure there will not be a power outage during the update process this will resolve the issue 100 % Dont forget to say thanks!
-check the system battery information and charger information of the computer; restart the computer, while the computer is booting up, press F2 repeatedly; check "battery info" -if it stated ac adapter = unknown device ; update the BIOS (-visit support.dell.com
NOTE:other computers may have different BIOS, if it is not the same you may have to consult manufacturer -click on drivers and downloads -click or choose by service tag -download the BIOS and install it on the computer) -check information after updating; if same message AC adapter = unknown device; call manufaturer for a replacement AC adapter, if status has changed it is a battery problem or motherboard, contact manufacturer to test battery
Hello, This problem has arised because your motherboard hasn't identified your battery. So, this is motherboard problem. next time when you chat with the dell representatives, tell them that your motherboard is not recognizing your battery. They would arrange a pickup and would have it repaired in their center. Good luck,
If you don't get any errors when you startup on battery then all you have to do is call Dell. Get work order number and send them the laptop and adapter. They are very fast. I sent a laptop to them last month and I had it back in 3 days! I was surprised.