A day or two after flashing the A25 update, the machine will occasionally reboot with the Win10 event log reflecting a critical error. I've re-flashed with A20. We'll see... Never had any such issues until the A25 update.
A29 is the latest Bios available. Whats your Current Bios now. Check your system for viruses. Then disable Antivirus and all unnecessory programs before flashing bios, Flashing from bootable usb or Bios menu settings is more recomended. Dont turn off system during the process. Thats all.
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I'm a big fan of Dell, a Dell user, and not an employee