Therefore, your Windows rig might have some boot issues.
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How to Fix Error 0164 Memory Size Decreased?

Go toStart>Windows configs>Update & Security>Recovery>Restart nowunderAdvanced startup.
Then, your Windows machine will restart right now and enter into Windows recovery environment.
What If your box Cant Access BIOS?
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A Guide for You!If your machine cant access BIOS, what should you do?
Move 2: Change BIOS options
Step 1.
Use the arrow keys on the keyboard to find BIOS setup default options.

After finding it, press theEnterkey to select it.
In the pop-up window, selectYesand hitEnter.
PressF10to save the changes and exit.
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Power off your gear and remove all the peripheral devices connected to your gear.
Disconnect the power cord form the AC power source.
Remove the computer and then find the battery on the board.
Then, you gotta remove the battery.
If it is on a holder, pay attention to the orientation of the+andon the battery.
Then pry it from its connector with a medium flat-blade screwdriver.
Wait for several minutes and reconnect the battery to your PC.
Put the computer cover back on and plug all the peripheral devices.
Press the power button to reboot your Windows machine.
Then your gear might boot normally without error 0164 memory size decreased.
Are your HP computer stuck on the CMOS checksum is invalid screen?
If yes, you’re able to get rid of this error with the solutions in this post.