When should you update laptop BIOS?
Short answer: Update BIOS only for a specific reason — a security vulnerability fix, a new hardware compatibility improvement, or a manufacturer-acknowledged stability bug. Do not update BIOS just because a newer version exists. The risk of a failed flash — which can render the laptop unbootable — is real, particularly in India where voltage fluctuations from power grid instability are common. Check your current version first, then compare it to what the OEM has released and why.
How to update laptop BIOS step by step
Step 1: Check your current BIOS version
Press Windows + R, type msinfo32, and press Enter. In the System Information window, find BIOS Version/Date in the System Summary section. Note the version number and date. Alternatively, open Command Prompt (not PowerShell) and run: wmic bios get smbiosbiosversion. Write down this version number before proceeding — you will need it to confirm the update was successful.
Step 2: Find the correct update for your model
Each manufacturer has a support portal where you enter your laptop's service tag or model number to get the exact BIOS file for your hardware:
- HP: Go to support.hp.com → enter your serial number (found on the sticker under the laptop) → Software and Drivers → BIOS. Download the
.exefile for Windows. - Dell: Go to dell.com/support → enter the service tag (7-character code on the bottom) → Drivers & Downloads → filter by BIOS. Dell also offers automatic detection via SupportAssist.
- Lenovo: Go to support.lenovo.com → enter the model or serial number → Drivers & Software → BIOS/UEFI. Lenovo also pushes BIOS updates through the Vantage app (Settings → System → Vantage Toolbar → System Update).
Never download a BIOS file from a third-party site — fake BIOS installers are one of the oldest hardware-level malware vectors. The OEM site only.
Step 3: Run the update safely
Before starting: plug in the charger and confirm the battery is above 40%. Close all open applications. Disable antivirus temporarily if it blocks the installer. On HP and Dell, double-click the downloaded .exe file and follow the on-screen prompts — the laptop will restart once or twice during the process and the screen may go black for 2–5 minutes. Do not touch the keyboard or power button during this window. On Lenovo, the Vantage app handles the process; or run the downloaded package which stages the update and applies it on the next reboot.
Step 4: The India angle — power cuts during BIOS flash
India's power grid can produce brief outages even in urban areas. A power cut during a BIOS update is the most dangerous scenario — it can corrupt the firmware at a point where the laptop cannot boot even to attempt recovery. Before starting any BIOS update, connect a UPS (Uninterruptible Power Supply — a battery backup that keeps the laptop running through a brief outage) if you have one, or use a surge protector. Most HP EliteBook, Dell Latitude, and Lenovo ThinkPad business laptops have a BIOS Recovery feature — a failsafe that lets you restore firmware from a USB drive even when the main update fails. Check our guide on updating BIOS safely for the full USB recovery procedure, and read about resetting BIOS to defaults if you need to undo changes after an update. For BIOS issues that go beyond software recovery, our BIOS repair and recovery service handles chip-level re-flashing.
When to call a laptop repair service
When DIY ends
Stop and seek professional help if: the laptop does not boot after a BIOS update, the update installer shows an error message about an incompatible model, or the laptop is stuck at a black screen with no activity for more than 10 minutes after restarting for the update.
Typical cost in India
BIOS re-flash after a failed update: ₹800–₹2,500 depending on the brand and whether the chip needs physical programmer equipment. Diagnosis at your door: ₹149, No Fix No Fee.
A note from the LRW Engineer Team
Most BIOS corruption cases we see are self-inflicted — customers downloaded the wrong BIOS version (e.g., a BIOS for the same model number but a different hardware revision). Always verify using the full service tag, not just the model name. HP Pavilion 15 has multiple hardware variants and the wrong BIOS file will fail to install — or worse, install and corrupt the firmware silently.