🛠️ Common Fixes for “No Power” on HP EliteBook 840 G1
If your laptop shows no signs of powering on at all (no lights, no fans), here are some steps you can try before going to a service center:
✅ Basic Troubleshooting Steps
Check the power supply
Ensure the adapter is firmly connected to both the laptop and a working wall socket.
Try a different compatible charger if available.
Perform a Hard Reset
Unplug the power adapter.
Remove the battery (if removable).
Press and hold the power button for 15–30 seconds.
Reconnect power (battery & adapter) and try powering on.
Check for Power Lights or Blink Codes
Some HP laptops flash LEDs to indicate hardware issues, e.g., RAM, motherboard problems.
Reset BIOS / Embedded Controller
On some models you can drain residual charge and reset the controller by holding the power button with no power attached.
Disconnect Peripherals
Remove any USB devices, external drives, SD cards then try powering on.
If these steps don’t bring any signs of life, the issue may be internal (e.g., power circuit, motherboard, battery failure, or faulty components). That’s where professional service helps.
🧑🔧 Professional Repair – Computer Service Centers in Chennai (OMR & Nearby)
Below are reputable service centers in Chennai where you can take your EliteBook 840 G1 for diagnostic and repair:
📍 Raminfotech Laptop Service Chennai Pvt Ltd – OMR
Laptop & computer repair specialists, including HP models.
Services include diagnosis of power-on issues, motherboard/problems, battery replacement, and more.
Free pickup & drop available at some centers (call ahead to confirm).
📍 Other Nearby Raminfotech Branches (All handle laptop power issues)
Raminfotech Laptop Service Chennai – Velachery
Raminfotech Laptop Service Chennai – Adyar
Raminfotech Laptop Service Chennai – Vadapalani
Raminfotech Laptop Service Chennai – Tambaram
Raminfotech Laptop Service Chennai – Porur
Raminfotech Laptop Service Chennai – Ambattur
These are all part of the same reputable laptop service network, offering repairs including no power, no boot, RAM issues, motherboard repairs, battery and charger replacements.
📝 Tips Before Visiting
Call ahead to describe the issue and confirm approximate diagnosis charges.
Backup data if possible before service — but if the laptop won’t power on, your service center may help with data recovery.
Ask about warranty or guarantee on repairs.
📌 Summary
| Problem | Possible Solution |
|---|---|
| No power or no lights | Hard reset, check charger, battery, power socket |
| Flickering lights but no boot | Try CMOS reset / check RAM |
| No response at all | Likely component failure — recommended service center visit |