I own an Aspire TC-780A-UR12 running Windows 10 Home 64-bit. My BIOS is currently R02-A3 (outdated). The latest BIOS listed in Acer support for this system is R02-B2. When I attempt to update/flash the BIOS, it simply flickers but the BIOS never changes. Please help as this BIOS should correct my DVD recognition problem. Although I am an elder citizen and a novice when it comes to making changes to the system properties; I believe even I should be able to update the BIOS without having to pay a technician to do it. So please provide any assistance in a "step-by-step solution"--very detailed and basic. Any and all assistance is greatly appreciated. Thanks!