Corrupt BIOS?

[g7ivp]

Hello,

When I boot a screen presents an error message about missing data, I press return and boot proceeds ok.

When I run msinfo32 I get the following with rubbish in some fields (BIOS also shows similar characters):

OS Name Microsoft Windows 10 Home
Version 10.0.19045 Build 19045
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name DESKTOP-V2LF0M7
System Manufacturer HP
System Model ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
System Type x64-based PC
System SKU ÿÿÿÿÿÿÿÿÿÿÿÿ
Processor AMD A8-7410 APU with AMD Radeon R5 Graphics, 2200 Mhz, 4 Core(s), 4 Logical Processor(s)
BIOS Version/Date Insyde F.29, 07/02/2020
SMBIOS Version 2.8
Embedded Controller Version 99.53
BIOS Mode UEFI
BaseBoard Manufacturer HP
BaseBoard Product 80CB
BaseBoard Version 99.53
Platform Role Mobile
Secure Boot State Off
PCR7 Configuration Binding Not Possible
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume1
Locale United Kingdom
Hardware Abstraction Layer Version = "10.0.19041.2728"
User Name DESKTOP-V2LF0M7\Steve
Time Zone GMT Daylight Time
Installed Physical Memory (RAM) 16.0 GB
Total Physical Memory 14.9 GB
Available Physical Memory 11.9 GB
Total Virtual Memory 17.7 GB
Available Virtual Memory 14.6 GB
Page File Space 2.75 GB
Page File C:\pagefile.sys
Kernel DMA Protection Off
Virtualization-based security Not enabled
Device Encryption Support Reasons for failed automatic device encryption: TPM is not usable, PCR7 binding is not supported, Hardware Security Test Interface failed and device is not Modern Standby, Un-allowed DMA capable bus/device(s) detected, Disabled by policy, TPM is not usable
Hyper-V - VM Monitor Mode Extensions Yes
Hyper-V - Second Level Address Translation Extensions Yes
Hyper-V - Virtualization Enabled in Firmware Yes
Hyper-V - Data Execution Protection Yes

I tried to make a USB recovery stick (from sp96570) to refresh the BIOS but it won't boot (I've enabled USB boot, etc) and sp96570 doesn't offer to update (greyed out).

Any suggestions as to how to replace the BIOS (even going back to F28) gratefully received.

[g7ivp]

Found I was trying to update BIOS the wrong way. Held down Windows and B keys to bring up BIOS update screen and got a different error:

This laptop originally came with Windows 10 but I wiped it and installed Linux then added Windows 10. I repartitioned the disk 50-50.

Have I lost the BIOS update (was it on a recovery partition)?