cmos checksum invalid 502 after SSD upgrade

[Mujthabap]

I upgraded my Hp pavilion 15-ec0101ax SSD with Samsung evo 980 1 tb,and cloned c drive to new ssd. While first booting I disconnected previous hdd as instructed by youtubers,but after boo successful I reconnected hdd and booted, but every time I Power on my laptop booting windows shows repair and then opens BIOS window to select the disc, which can select manual my SSD to boot.

Finally I disconnected again hhd and tried then display shows cmos checksum invalid 502.

BIOS option shows always when I connect hdd.

I think there is some issue related to cloning or BIOS.

Please help me..

Thank you

[Paul_Tikkanen · Accepted solution]

Hi:

I think you are right about a possible issue with the cloning.

I would temporarily disconnect the hard drive again and use the HP cloud recovery tool to create a bootable USB recovery drive that will reinstall W10, the drivers and the software that originally came with your notebook on the SSD.

Here is an info link for how to use that utility...

HP Consumer PCs - Using the HP Cloud Recovery Tool (Windows 10, 7) | HP® Customer Support

Note that PC's that come with dual drive configurations have no operating system on the 2.5" drive.

If Windows is on the 2.5" drive, the PC will always want to boot from that drive first, and not the SSD.

[Mujthabap]

Thank you for your help and time.

[Paul_Tikkanen]

You're very welcome.