On a Dell XPS 15, the 4 amber and 6 white flashing LED pattern indicates a CPU failure according to Dell’s diagnostic LED error codes. Possible Causes & Fixes: 1️⃣ Power Cycle the Laptop (Quick Fix) • Step 1: Unplug the charger. • Step 2: Hold the power button for 30 seconds to drain residual power. • Step 3: Plug it back in and try to turn it on. 2️⃣ Reseat the RAM • If the CPU isn’t dead, the error could be bad RAM or improper seating. • Try removing and reinserting the RAM. 3️⃣ Reset BIOS (CMOS Reset) • If the issue started after a BIOS update or overclocking, resetting the CMOS might help. • On some Dell XPS models, you can do this by removing the battery and holding the power button for 30 seconds. 4️⃣ Check for Overheating or Dust • If your laptop has been running hot, the CPU might be throttling or failing. • Clean out dust from the fans and heatsinks if possible. 5️⃣ Motherboard or CPU Failure (Worst Case) • If the above steps don’t work, the CPU or motherboard may be faulty. • If under warranty, contact Dell Support for a repair. ⸻ Next Steps: Try power cycling first. If that doesn’t work, reseat the RAM and reset the BIOS. If the issue persists, you may need a repair or motherboard replacement. Has anything changed recently (e.g., BIOS update, overheating, new RAM)? Answer from TropicalPossum954 on reddit.com