how to restore BIOS Presario CQ56?

[pecheur_ua]

Laptop: Presario CQ56 (CQ56-172SR), Windows 7.
Problem: while updating the BIOS the laptop crashed (freeze). Before the update was BIOS version F.07, updated to version F.15. Update file downloaded from the official site.  Update file was run under Windows 7. The laptop was working all night and not switched off. Update was not completed. The laptop was turned off by disconnecting the battery.
Now the laptop is switched on but the screen is black. Burning power LED. When connecting USB flash drive, LED lights at regular intervals.
Tell me, please, how I can restore the BIOS?

Sorry for the quality of the English language 🙂

[ManjunathTech]

Hi

There are 3 different ways to recover an earlier version of the BIOS

1)   From HP_Tools Partition

Whenever you upgrade the BIOS on your notebook, a copy of the previous version is stored in the HP TOOLS partition of your hard disk drive.

1. Plug the notebook into an AC adapter.
2. Press the Power button while holding the Windows key and the B key.
3. The emergency recovery feature replaces the BIOS with the last known good version. The computer reboots automatically when the process is completed successfully.

Note: If the HP_Tools partition has been deleted by customer then the above process will be inaccessible or the system will hang if the above process is tried.

2)   From UEFI Environment Menu

Press the Power Button and then tap the Esc key to enter the UEFI environment menu.  In the menu you should see a BIOS management option. Select it and then select Rollback to Previous BIOS and hit enter.

3)   Recovering the BIOS using an External Storage Device

If the HP_TOOLS volume on your HDD has been deleted, a USB key with an HP_TOOLS volume can be used as an alternative. The key can be created manually or by using the HP UEFI BIOS Update SoftPAQ or the new HP UEFI Support Environment SoftPAQ and selecting the Create a USB key option. The USB key does not have to be bootable. However, this assumes the boot block is not corrupted in which case a repair is required.

To recover the BIOS on your notebook using the USB key:

1. Plug the notebook into an AC adapter.
2. Insert the USB key with HP_Tools installed into an available USB port.
3. Press the Power button while holding the Windows key and the B key.
4. The emergency recovery feature replaces the BIOS with the version on the USB key. The computer reboots automatically when the process is completed successfully.

You are now able to boot into the BIOS screens or Windows operating system per usual after recovering the BIOS.

[pecheur_ua]

The hard disk have not partition HP_TOOLS, so I create a USB key.

You mean this program? It creates a USB flash drive with the label HP_TOOLS. In the root directory located folder ¨Hewlett-Packard¨, in her located folder ¨BIOS¨ and ¨BIOSUpdate¨.

In the folder ¨BIOSUpdate¨ there are such files: CryptRSA32.efi, CryptRSA.efi, HpBiosUpdate32.efi, HpBiosUpdate32.s09, HpBiosUpdate32.sig,  HpBiosUpdate.efi, HpBiosUpdate.s09, HpBiosUpdate.sig.

In folder ¨BIOS¨ located folders ¨Current¨, ¨New¨, ¨Previous¨, they are empty.

I did all the steps described in the section ¨3) Recovering the BIOS using an External Storage Device¨, but neither of which has not happened. The screen is still black. Laptop turn accesses to the hard drive, to USB flash drive and network card, in that order burn diveces LEDs.

What advise do more?

Thank you for your reply!

[ManjunathTech]

Hi

You are one last option incase you are comfortable in reseating the Memory and CMOS/RTC battery from the back panel this might help you to fix the issue. Or you need to check the warranty and call HP Technical support and send unit for service.

[Shreyashananda]

Used HP_TOOLS Softpaq to creat USB key, should I put sp52477 in bios/new, bios/current & in bios/previous

Regards Swami Shreyashananda