Perform the CMOS reset (remove battery). If that fails, use the recovery flash (Method C in Part 3). As a last resort, contact Acer support—your board may need to be reflashed via an SPI programmer.
. While Acer does not provide a standalone technical manual for individual motherboards, essential configuration data is available through system documentation and verified community guides. AliExpress Core Specifications Acer Aspire Tc-885 B36h4-ad Intel LGA 1151 Ddr4 ... - eBay acer b36h4ad motherboard manual upd