Laptop's Card reader sometime not work

In my laptop, when I connected a memory card to the card reader of the laptop, sometime it was detected. sometime not detected.
I tried other memory card, it was still the same problem. I thought the  laptops's memory card reader was damaged.
It turns out the memory card is not damaged

The problem is solved. In the BIOS setting of my laptop, there is an option named Card Reader Power Saving, I changed it from Enable to Disable.

The memory card is always detected now.

Maybe you have the same problem, and has card reader power saving setting in the computer/laptop's BIOS setting, you can try.

BIOS IS NOT UEFI! Solve the problem

In my Toshiba Laptop, when I try to boot using external boot I get the error message:
BIOS IS NOT UEFI!

The problem solved after I change  Boot mode  in System Configuration menu in BIOS setting.

Restart the Toshiba laptop and go to the BIOS menu, (press F2 key many times during computer up)
Make Disable the Secure Boot
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