Not certain on Alienware x15 R2, but many Dell laptops could be power on and operate without a battery.
Power button is unlikely an issue. It could be faulty power adapter, bad battery, damaged DC-in jack, or bad charging circuit on motherboard.
Yes, Alienware x15 R2 is a nice computer with 12th gen CPU and discrete graphics of RTX 3000 series.
For no power, no POST, or no video issue, you may want to perform an RTC reset to see if it may help. With power adapter connected, press and hold power button for 30 - 35 seconds until power LED blinks 3 times. Release the power button, the RTC reset is complete.
Chino de Oro
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Posted March 26th, 2026 04:37
Not certain on Alienware x15 R2, but many Dell laptops could be power on and operate without a battery.
Power button is unlikely an issue. It could be faulty power adapter, bad battery, damaged DC-in jack, or bad charging circuit on motherboard.
Yes, Alienware x15 R2 is a nice computer with 12th gen CPU and discrete graphics of RTX 3000 series.
For no power, no POST, or no video issue, you may want to perform an RTC reset to see if it may help. With power adapter connected, press and hold power button for 30 - 35 seconds until power LED blinks 3 times. Release the power button, the RTC reset is complete.
https://www.dell.com/support/kbdoc/en-us/000125880/how-to-reset-real-time-clock-rtc-to-recover-your-dell-portable-system