Screen goes dark, system locked
Screen goes dark, system locked
Hello, I'm dealing with an old HP 280 G1 MT Business PC. I attempted a BIOS update following an SSD upgrade and installing Windows 10. After the update, the PC restarted but never turned back on. I only see a black screen and sometimes hear 8 beeps or double 8s. I've tried removing the battery, adjusting jumpers, and even using a PS/2 keyboard with an active USB adapter. Nothing worked. I can't use the "Windows + B/V" mode because none of the keyboards are recognized. Any suggestions or help would be greatly appreciated. Thank you.