Latitude E5550 (out of warranty).   

Original Hard drive had gotten slow and battery wouldn't hold a charge. Was running Windows 10

1. Installed new battery (3-cell 38Wh OEM Battery RYXXH)
2. Installed new SSD (Crucial MX500 1TB - CT1000MX500SSD1)
3. BIOS version A24
4. 1. Set to UEFI
   2. SATA set to ACHI
   3. Secure boot disabled
5. Using bootable USB installed clean Windows 20H2 allowing install to define partitions
6. Applied latest Windows updates
7. Installed Dell Support Assistant and installed 9 recommended drivers including 
   1. Intel Rapid Storage Technology Driver - A14
   2. Intel Chipset - A01
8. I do show 3 drives in Device Manager missing drivers 
   1. Broadcom on USH
   2. PCI Simple Communications Controller
   3. Unknown Device

System runs fine for a while

• Can reboot with no issue
• Can shutdown and restart with no issue
• Can close the lid and reopen hours later no issue

If I leave the laptop lid open this problem occurs when it seems to goes to sleep  (plugged in to power)

1. BSOD: Critical Process Died 
2. Reboot fails with No bootable drive found

If I run the ePSA diags immediately after this, the hard drive is not found. 

• If I fully power off and back on I can run ePSA  diags and drive is found and no issues noted
• I can then boot Windows

Power options all set to Sleep

• Fast startup is checked as well as Sleep and Lock.  Hibernate is not.

Power plan set as Balanced

• Display off 10 minutes
• Hard drive 20 minutes

I have pulled and reseated the hard drive and battery.

Any suggestions on what is causing this or how to fix this?