Greetings! 1) What is the switchboard PCA for? (Please?) 2) How do I tell the difference between a keyboard problem and a screen problem?
Compaq 2570US. Original everything (as far as I know).
Troubleshooting: When powered up, I hear the fan for a few. If I press lots of keys, the fan stays on longer. No video at all. Tried toggling Fn+F5 to switch monitors. No luck. Hard drive light flashes every two seconds - in sync with the AC light flashing. Pulled HDD - reads well; no viruses. Keyboard - CAPS LOCK, NUM LOCK, and KEYBOARD LOCK status lights are all on (constantly). Put a bootable USB thumb drive in the slot for kb/mouse and the keyboard status lights do not come on. (I presume that slot is working as advertised!) Moved to another USB port to see if it would acknowledge my bootable thumb drive. No luck. CD/DVD access light toggles, but won't boot CD or DVD. On any boot/reboot attempt, no video. No beep codes either. F8 shows nothing. Neither does pressing any other keys.
All suggestions appreciated!
Thank you very much for your time!
< Steve >