If it hangs, try clearing the CMOS by removing the circular CR2032 battery for 30 seconds. E1 & E2: S3 Resume & Video Initialization
If your Intel motherboard has (USB port marked for BIOS update), use another computer to download the latest BIOS. Rename the file according to the manual (e.g., R9E.CAP for ASUS Rampage). Insert USB, press Flashback button for 3 seconds. This overrides corrupted NVRAM and microcode issues that cause b6 . intel motherboard 21 b6 e1 e2
: Maintaining machines that require 32-bit operating systems or older software drivers. If it hangs, try clearing the CMOS by
| Step | Action | Expected result | |------|--------|------------------| | 1 | Clear CMOS, remove battery for 10 min. | Resets PEI variables; may change code to 55 (no memory) instead. | | 2 | Boot with in slot A2. | If code moves past 21, memory training succeeded. | | 3 | Remove all PCIe devices; use onboard VGA (if available). | E2 should not appear; board should progress to A9 (setup) or 99 (boot). | | 4 | Flash the latest Intel BIOS recovery capsule (using USB flashback or programmer). | Rebuilds corrupted ME/descriptor regions. | Insert USB, press Flashback button for 3 seconds