2 longs beeps and 2 shorts beeps

[ilias795]

Hi dear users and experts

i have Hp prodesk 400 G4 MT Business pc it works normally today i try to turn on the pc but a red light from the button and also 2 long beeps and 2 shorts beeps after, and the screen stay black

i will be thankful if i get any help

[Paul_Tikkanen]

Hi:

Below is the link to the service manual for your PC.

Maintenance and Service Guide HP ProDesk 480 G4 MT and HP ProDesk 400 G4 MT

Chapter 7, page 91 has the troubleshooting guide for the code your PC is generating.

BIOS   2.2 The main area (DXE) of BIOS has become corrupted and there is no recovery binary image available.

You will need to try and make a BIOS recovery image.

Using a USB Device to run HPBIOSUPDREC

HPBIOSUPDREC.exe can also be run from a USB storage device, including flash memory devices and external hard drives. To do this insert the device and take note of the assigned drive letter. Run HpBiosUpdRec64.exe and choose the option to Create Recovery USB flash drive. Or you can manually copy the application .exe and the associated BIOS .bin file to the root of the drive indicated by the drive letter or a folder on that drive. The update utility can then be executed from its location on the USB device. If the system has a BIOS Setup password enabled, then HPBIOSUPDREC will prompt for the password to be entered before completing the flash process. For more information, view Readme.txt or HPBIOSUPDREC.txt, both located in the HPBIOSUPDREC folder after you run the BIOS file.

You can find the latest BIOS file on your PC's support page at the link below to make the recovery image with.

HP ProDesk 400 G4 Microtower PC Software and Driver Downloads | HP® Customer Support

[ilias795]

Hi

Thanks you for your help sir

well i do all what you telling me about the bios is done i download the exe but nothing is shown in the screen,

just to know the screen is off also the keyboard is totally off but i'm sure that i have 2 longs beeps then 2 short beeps

best

[Paul_Tikkanen]

You're very welcome.

If you created the USB BIOS recovery USB flash drive using the software in the folder after you ran the exe file and it didn't work, unfortunately, I don't have any other suggestions for you to try.

[ilias795]

RE

yeah because the screen is totally off i can't do anything i saw in some videos a flashing of the bios but i don't know how it works

Thanks a lot

best