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HP Recommended
compac pro 6505
Microsoft Windows 10 (64-bit)

Held down shift key when booting.... selected memtest86+.  ... memtest starts to run but hangs after a second or two.... says I have 23 Gig...( but have 32 installed)... ran SPD ok... says all 4slots have an 8192 MB DDR3-1600.... when test hangs. no keys work, no f4 f1 esc .... no key works at all so have to power off manually... after installing 4 mem chips got a 201 = mem error... F4 didn't work... had to use F1 to boot.  Still showing only 23 gigs.   

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