You only did half the job.
You say you did a CMOS Reset. By that I presume you mean:
1. Shut down, open case, remove the battery.
2. Move the Reset jumper to the Reset pin pair for at least 15 seconds, then replace it in "normal run" position.
3. Replace the battery.
4. Close case and power up.
Now, you should also have done these steps.
5. Boot into BIOS Setup immediately.
6. Go to one of the last pages and look for where you can Load Factory Default settings, or even better, Load Optimized Settings. Do that. This loads a complete set of settings reliably into the wiped CMOS.
7. Now go though BIOS Setup and re-set any customized settings you had before. I hope you had a record of those before you started! Do you have UEFI Support...