1 Access BIOS. To start troubleshooting, you need to access the BIOS setup utility. ... 2 Reset Settings. If you've accessed the BIOS but aren't sure what's wrong, resetting to default settings can resolve many issues. ... 3 Update BIOS. ... 4 Check Hardware. ... 5 Clear CMOS. ... 6 Contact Support. ... 7 Here's what else to consider.