Check the LED indicator on the adapter brick itself \u2014 if it is off or flickering, the adapter has failed<\/li>\n<\/ul>\n\nWhy this matters:<\/strong> Approximately 70% of “laptop won’t turn on” calls we receive turn out to be a dead charger, not a dead laptop. A replacement charger for Dell, HP, or Lenovo costs \u20b9500\u2013\u20b91,500. A motherboard repair costs \u20b94,000\u2013\u20b910,000. Always confirm the power source before assuming the worst.<\/p>\n\nCNC tip:<\/strong> If the laptop charges but the battery drains immediately when unplugged, the charger is fine but the battery needs replacement \u2014 a \u20b9799\u2013\u20b92,499 repair, not a motherboard job.<\/p><\/blockquote>\n\n
\n\n<\/span>Step 2 \u2014 Run the Built-In Display Test for Your Brand<\/span><\/h2>\n\nMost laptops have a hardware display diagnostic that runs independently of Windows \u2014 meaning it works even if your operating system is completely corrupted.<\/p>\n\n
\n- Dell laptops:<\/strong> Hold the D<\/kbd> key and press the Power button. A colour test pattern appears if the screen hardware is working correctly<\/li>\n
- HP laptops:<\/strong> Watch the Caps Lock LED at startup \u2014 the blink pattern tells you the fault type (2 blinks = BIOS issue, 3 blinks = RAM fault, 5 blinks = embedded controller error)<\/li>\n
- Lenovo laptops:<\/strong> Press F10<\/kbd> at the BIOS screen to launch the hardware diagnostic tool<\/li>\n<\/ul>\n\n
Why this matters:<\/strong> A screen that is dark or distorted could be a faulty panel (\u20b92,500\u2013\u20b96,999 to replace) or a loose display cable (\u20b9500\u2013\u20b91,200 to fix). That is a cost difference of over \u20b95,000. This test tells you which category you are in before you visit any shop.<\/p>\n\nCNC tip:<\/strong> If the display test shows clean colour bands but your screen is dark in Windows, the issue is almost certainly a software or driver fault \u2014 not a hardware replacement.<\/p><\/blockquote>\n\n
\n\n<\/span>Step 3 \u2014 Listen Carefully Before You Open Anything<\/span><\/h2>\n\nThe sounds a laptop makes at startup are diagnostic information. Most people ignore them. Do not.<\/p>\n\n
\n- Clicking or grinding from the base of the laptop:<\/strong> Mechanical hard drive failure \u2014 stop using it immediately. Do not power it on again. Every additional start risks destroying recoverable data permanently<\/li>\n
- Repeating beep pattern at startup:<\/strong> POST error. Count the beeps carefully (or record on your phone). Each pattern maps to a specific fault<\/li>\n
- Complete silence when you press Power:<\/strong> No fan spin, no beep, nothing. This indicates a power delivery or motherboard issue<\/li>\n
- Fan running loud and constant:<\/strong> Thermal throttling. Likely a blocked vent or dried thermal paste \u2014 costs \u20b9500\u2013\u20b9900 to service. Left too long, this causes motherboard damage costing \u20b94,000+<\/li>\n<\/ul>\n\n
CNC tip:<\/strong> If you hear clicking and suspect hard drive failure, call us before visiting \u2014 +91-9810130131. We will advise you on how to transport the laptop to minimise further data loss.<\/p><\/blockquote>\n\n
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