Fixing Lenovo IdeaPad 3 with BIOS & Backlight Issues – ESC/Caps/Num Lights On, Black Screen

💻 In this video, I repair a Lenovo IdeaPad 3 15 with *multiple faults* that are common in many laptops. 🧠 The laptop showed *no display* and had the classic **"three lights of death"**: ESC, Caps Lock, and Num Lock LEDs lit up — a common sign of a corrupted BIOS. 🔧 After restoring the BIOS, the screen still stayed black — but this time, it was due to a **backlight failure**. Both issues are diagnosed and fixed step by step. -------------------------- 🛠️ What You’ll Learn: ✅ How to recognize BIOS-related LED error patterns ✅ How to flash or replace a corrupted BIOS ✅ Testing the screen with an external monitor ✅ Identifying backlight problems after BIOS repair ✅ Power rail and display cable troubleshooting ✅ Verifying the repair with a full system reassembly ⚙️ This repair process applies not only to Lenovo IdeaPads but also to many laptops from HP, Dell, Acer, etc. -------------------------- ⚠️ DISCLAIMER: This video is intended for **educational purposes only**. Do not attempt repairs unless you understand the risks and are working on a device you **own or have permission to fix**. Always disconnect power and follow safety precautions. -------------------------- 🌍 Need help in Spain? 🛠️ Visit 👉 https://salvamipc.es We offer expert computer repair in **Bilbao and nearby areas**, including BIOS flashing, screen repairs, and full diagnostics. -------------------------- 🔑 Keywords lenovo ideapad 3 bios repair, three lights of death laptop, esc caps num lights on, laptop bios corrupted fix, no display laptop repair, laptop backlight issue, black screen after bios repair, laptop screen no backlight, lenovo laptop troubleshooting, salvamipc laptop repair, bilbao computer service