HP EliteBook 840 G1 Upgraded from MX300 to MX500 using Acronis to clone At startup system will not boot (Boot device not found) then attempts PXE boot Hit ESC key to terminate System automatically restarts BIOS detects "HP_Tools" partition exists and starts diag tools from that partition immediately just exit out of diag utility System automatically restarts System boots into Windows 10 and every thing runs as normal. Why? Why didn't it find it the first time? MX300 worked fine, MX500 need to go thru above to get it to boot.
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