Nine year old computer sounds like it has given up the ghost. Mostly likely a motherboard failure. That means buying a new computer. Only thing worth trying is replacing the $2 cmos coin cell battery. See manual online at Dell Support for how to do it.
Mary G
4 Operator
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20.1K Posts
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March 12th, 2019 06:00
Nine year old computer sounds like it has given up the ghost. Mostly likely a motherboard failure. That means buying a new computer. Only thing worth trying is replacing the $2 cmos coin cell battery. See manual online at Dell Support for how to do it.
speedstep
9 Legend
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47K Posts
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March 12th, 2019 08:00
The BIST button is not a system Diagnostic Button.
You can get a 390 with windows 10 pro for the same cost as the windows Disk alone.
https://www.walmart.com/ip/Dell-Optiplex-390-Refurbished-Desktop-Tower-Intel-Core-i3-3-3GHz-8GB-250GB-Windows-10-Pro-Monitor-Not-Included/643117092
http://www.dell.com/support/contents/us/en/04/videos/videoplayer/JzNzFqNTpnGF1VTuKI-CBALVWirB074O
Bult In Self Test BIST
Solid Amber power button is BAD POWER SUPPLY or DEAD MOTHERBOARD or both.
https://www.youtube.com/watch?v=udGOe7LQJEI