Upgrading the CPU is a common operation for better computer performance.
However, the problem is that the BIOS loop often occurs after the upgrade.
BIOS Loop After CPU Upgrade
The processor upgrade can significantly enhance your computers performance in several ways.
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A newer CPU can process tasks more quickly and efficiently, which is beneficial for high-intensity computing tasks.
With a more powerful CPU, your system can handle multiple tasks and demanding applications more effectively.
Do you encounter the problem that can’t access BIOS after CPU upgrade?

If so, here is the right spot to troubleshoot it.
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Step 1.
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Choose the drive that you connect to create a bootable media.
Then insert the media into the problematic PC and boot it from the created disc.
How to Fix BIOS Loop After Upgrading CPU?
In this way, changing the BIOS mode to CSM mode may solve the loop issue.
Heres how to do it.
After that, you have enabled CMS successfully.
Step 2. reboot your machine and find out if CPU causing BIOS loop still exists.
Related article:CSM vs UEFI: Whats the Difference Between the Two Modes.
Lets see how to clear CMOS to fix BIOS loop after CPU upgrade.
Via Battery
Step 1.
Power off your gear and remove all peripheral devices and power connections.
Step 2. initiate the computer cover and take off the battery for 1-5 minutes.
Then reconnect it to the computer and put the cover back on.
Reboot your machine and verify if you still cant reach the BIOS setup.
Via Jumper
Step 1.
Shut down the machine and open its cover to see the motherboard.
Read your motherboard manual and find out the CMOS jumper.
In general, the jumper has three pins located near the battery.
Put back the CMOS to the default position and reboot your machine.
This tutorial teaches you how to reset BIOS/CMOS to default/factory configs in Windows 10 PC or laptop.
Check the 3 steps guide.
If the ways dont work, youd better seek help from experts.