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9 Posts
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2596
April 5th, 2018 11:00
Dell Optiplex 790 Dead
I think the motherboard on my Dell OptiPlex 790 has died. The 1, 2, 3 lights came on. I cannot boot up the computer. I changed the CMOS battery and I re-seated the RAM but nothing happened. I want to know if it's truly gone or if there is something else I could do.
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speedstep
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47K Posts
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April 5th, 2018 11:00
1 2 3 LED ON COMPUTER DEAD The DL2032 battery has died.
coin cell battery failure has occurred.
https://www.amazon.com/Duracell-DL2032B2PK-Lithium-Medical-Battery/dp/B002YEE0P6
MrAllanson
9 Posts
0
April 5th, 2018 12:00
I have already changed out the battery. It still did not work.
I turned off the power, held the power button for about 20 seconds, re-installed the CMOS battery and re-installed the RAM modules. I plugged everything back in and started the computer. It ran for a few seconds, then turned itself off for about 5 seconds, and then came back on with the 1, 2, 3 lights.
MrAllanson
9 Posts
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April 9th, 2018 10:00
Right now the machine is up and running.
I re-installed the hard drive and after it did its POST test, it said "Boot drive not found." I restarted the machine and went into BIOS and reset the boot order. I restarted it and it went back to normal. I still don't know what caused the problem in the first place but at least I have some ideas on what to do if something like that happens again.