By any chance do you need to upgrade BIOS for any new hardware?  If not, and updating isn't working, it's safer to leave it than brick the MB. The other thing is it may need to be done in increments vs. jumping from A18 to A22. No sure what you mean by "But whenever I open it..."  Whenever you open BIOS? Dell Support Assist may also help you update BIOS. If updating, it all has to go absolutely perfect, or MB will brick (no power interruptions and so on). Another way to update (probably a better way) is update from the Dell website. If you're feeling hesitant about it, nothing wrong with that.  Goes back to it may be safer to leave it.
Hello, I own a Dell OptiPlex 790 Series. I have the A18 BIOS, but then I realized I needed to upgrade. And so I installed the BIOS A22 Upgrade. But whenever I open it, no application opens up. Could this be a bug, or is this a problem with my Operating System? If there are any solutions to this problem, I would appreciate it. Thank you.
Dell OptiPlex 790 A18 BIOS Not Upgrading to A22 BIOS