Hi all,

I am running an old Optiplex 755 Desktop with Windows 7, and am having a boot issue with the error message "HDD replacement is not valid, continued use may....". I first dealt with this last year when I bought this unit and installed a non-WD hard drive. I changed the jumper settings to eliminate the warning, but now am getting it again when trying to update the BIOS from a USB stick. No idea what's best here. Any help would be greatly appreciated. :emotion-15: