How to Update BIOS Without Bricking Your PC-Step-by-Step
If you searched for how to update BIOS, you landed in the right place. This guide covers the full process from start to finish, including how to update bios windows 11, how to update bios windows 10, how to update bios laptop, how to update bios asus, how to update bios gigabyte, how to check bios version, how to update bios with usb, and how to update bios without usb.
msinfo32, download the exact match for your motherboard model and revision from the manufacturer’s site, copy it to a FAT32 USB drive, then flash it from inside the BIOS using the built-in tool (M-Flash, EZ Flash, or Q-Flash depending on brand). Never interrupt the process once it starts.
Table of Contents
Should You Even Update Your BIOS?
A BIOS update is not routine maintenance. Only update if one of these applies to you:
- You installed a new CPU and the system won’t POST (common on AM4/AM5 boards with an older BIOS)
- The manufacturer’s changelog fixes a bug you’re actually experiencing
- You need support for new RAM speeds, a new GPU, or Resizable BAR
- You’re patching a known security vulnerability in the firmware
If your system is stable and none of these apply, skip it. A working BIOS is worth more than a marginally newer one. If you’re not sure a BIOS update is even your real problem, our guide on fixing bottlenecks without upgrading hardware covers the other software-side fixes worth trying first, and our GPU bottleneck guide explains when Resizable BAR support actually matters.
How to Update BIOS
Follow this process step by step.
Step 1: Identify Your Exact Motherboard Model and Revision
This is the step most guides skip, and it’s the one that causes bricked boards. The wrong BIOS file for even a close-but-different revision can permanently damage your motherboard.
Fastest way (Windows): Open Command Prompt and run:
wmic baseboard get product,manufacturer,version
This returns your exact board name and, critically, the revision number (like Rev 1.0 vs Rev 2.0). Manufacturers often release different BIOS files per revision, and mixing them up is not reversible on most boards. If you want a full readout of your board and CPU details in one place, our CPU-Z guide walks through reading every field correctly.
If Windows won’t boot, the revision is also printed directly on the motherboard, usually near the RAM slots or PCIe slots.
Step 2: How to Check BIOS Version
Press Win + R, type msinfo32, and press Enter. Look for “BIOS Version/Date” in the System Summary panel. This works the same way whether you’re checking on Windows 11 or Windows 10. On Linux, run sudo dmidecode --type bios in a terminal.
Step 3: Download the Correct BIOS File
Go directly to the manufacturer’s support page for your exact model and revision (not a third-party download site). Read the changelog. If your current version already includes the fix you need, stop there.
Step 4: Prepare a USB Drive
- Format a spare USB drive as FAT32
- Extract the BIOS files to the root of the drive, not inside a subfolder
- Use a drive with no other important data on it
Step 5: How to Update BIOS With USB Drive
Every brand names its tool differently. Match yours below:
| Brand | In-BIOS Tool | Windows App Alternative |
|---|---|---|
| MSI | M-Flash | MSI Center |
| ASUS | EZ Flash | MyASUS |
| Gigabyte | Q-Flash | @BIOS |
| Dell | BIOS Flash Update | SupportAssist / Windows Update |
| HP | HP BIOS Update | HP Support Assistant |
Enter your BIOS setup (usually Del or F2 at boot), open the flash tool, point it to the USB drive, select the file, and confirm. Do not touch the power, keyboard, or USB drive until it finishes and the system reboots on its own.
How to Update BIOS ASUS Motherboards
Enter the BIOS setup and open EZ Flash 3 (usually under the Tool menu, see ASUS’s official EZ Flash walkthrough for model-specific menu locations). Select your USB drive, choose the BIOS file, and confirm. If you’d rather stay inside Windows, MyASUS has a System Update section that downloads and applies the correct BIOS automatically for supported models, no manual USB drive needed.
How to Update BIOS Gigabyte Motherboards
Enter the BIOS setup, press F8 or select Q-Flash from the menu (Gigabyte’s official Q-Flash guide covers the exact key combinations by board generation), point it to your USB drive, and select the BIOS file. Gigabyte’s @BIOS Windows utility can also search for and download the latest BIOS directly from within Windows if you prefer not to prepare a USB drive manually.
USB BIOS Flashback: Updating With No CPU, RAM, or GPU Installed
If you bought an older AM4, AM5, or LGA1700 board and your new CPU won’t POST because the board’s BIOS predates it, you don’t need any components installed to fix this. Most modern boards from ASUS, MSI, ASRock, and Gigabyte have a dedicated BIOS Flashback port on the rear I/O.
- Rename the downloaded BIOS file exactly as the manufacturer’s instructions specify (this varies by brand and board)
- Place it on a FAT32 USB drive plugged into the labeled Flashback port, not any USB port
- With the PC unplugged from CPU and RAM (or fully unbuilt), connect power to the motherboard only
- Press and hold the dedicated Flashback button until the light starts blinking
- Wait for the light to stop blinking, which signals completion (this can take 5 to 10 minutes, do not interrupt it)
This is the single most useful trick for anyone buying a used or older motherboard to pair with a newer CPU, and it’s absent from nearly every mainstream BIOS guide.
How to Update BIOS Without USB
If your motherboard or laptop supports it, you can skip the USB drive entirely and update from inside Windows:
- Windows Update: Go to Settings, Windows Update, Advanced Options, Optional Updates. Dell and some OEM systems push BIOS updates here as firmware updates
- Vendor apps: MSI Center, MyASUS, Gigabyte’s @BIOS, HP Support Assistant, and Dell SupportAssist can all detect, download, and install the correct BIOS automatically without you touching a USB drive
- Trade-off: In-BIOS USB flashing is more reliable if Windows is unstable or won’t boot, since it doesn’t depend on the OS being functional
How to Update BIOS Windows 11 and Windows 10
The process is nearly identical on both. How to update bios windows 11 and how to update bios windows 10 both come down to the same two paths: check Settings, Windows Update, Advanced Options, Optional Updates for a pushed firmware update, or use your manufacturer’s app (MSI Center, MyASUS, HP Support Assistant, Dell SupportAssist, Lenovo Vantage) to check and install manually. The msinfo32 command to check your version also works identically on both.
How to Update BIOS Laptop
- Plug into AC power for the entire process, never rely on battery alone
- Keep battery charge above 50 percent as an extra safety margin
- Close all background apps and disable sleep/hibernate during the update
- Use the manufacturer’s official update utility (HP Support Assistant, Dell SupportAssist, Lenovo Vantage) rather than manual USB flashing where available, since laptop BIOS chips are less recoverable than desktop boards
If the Update Fails: Recovery Options
A failed flash is scary but often recoverable on desktop boards, depending on your motherboard’s features:
- Dual BIOS boards: Flip the physical BIOS switch on the board to boot from the backup chip, then reflash the primary chip from there
- Boot block recovery: Many boards keep a small protected boot block that survives a failed flash and can auto-recover from a correctly named file on a USB drive on the next power-on
- No recovery chip: Contact the manufacturer’s RMA process. Do not attempt further flash attempts on a board with no dual BIOS or boot block, as repeated attempts on a corrupted chip rarely help
After the Update: Clear CMOS and Verify
Once the system reboots successfully, clear CMOS using the motherboard’s reset button or jumper. This isn’t always required, but it prevents leftover settings from the old BIOS version from causing instability, and it can rule out lingering issues if you notice odd temperature or clock behavior afterward, which our CPU throttling guide can help you diagnose. Then confirm the update actually applied:
- Re-open
msinfo32and check the BIOS Version/Date matches the file you flashed - Reapply any custom settings, like XMP/EXPO memory profiles and fan curves, since these often reset to default. If your system feels slower afterward, check our RAM bottleneck guide to confirm your memory speed actually re-enabled correctly
- For a full sensor readout confirming everything is running as expected post-update, our HWiNFO64 guide shows you exactly which numbers to check
Frequently Asked Questions
Does a BIOS update erase my files?
No, your storage drives and personal files are untouched. It only resets BIOS-level settings like fan curves, boot order, and XMP profiles.
How long does a BIOS update take?
Most desktop flashes finish in 2 to 5 minutes. USB Flashback without a CPU installed can take 5 to 10 minutes since it runs at a slower, safer speed.
Can I update my BIOS without a CPU installed?
Yes, if your motherboard has a USB BIOS Flashback port. This is the standard way to update an older board before installing a CPU it doesn’t yet support.
Can I downgrade my BIOS?
Usually yes, but it carries more risk than upgrading. Some manufacturers block downgrades past certain security versions, and downgrading can reintroduce bugs the newer version fixed. Only downgrade if a specific version caused a regression you need to undo.
Will a BIOS update affect BitLocker or Windows activation?
BitLocker may prompt for your recovery key after a BIOS update since it changes the trusted boot measurements. Have your recovery key saved beforehand. Windows activation, which is tied to your digital license, is not affected.
What happens if the power goes out during a flash?
This is the main cause of a bricked motherboard. If your board has dual BIOS or boot block recovery, it can often self-repair on the next boot. Without those features, recovery usually requires manufacturer RMA. Always update on a desktop connected to a UPS if outages are common in your area, or a fully charged laptop on AC power.
Final Words
A BIOS update is one of the few PC maintenance tasks where rushing genuinely costs you. Confirm your exact board revision, download the right file, and don’t touch the power until it’s done. Follow those three rules and the process is quick, safe, and rarely worth worrying about.
