UNSOLVED
Optiplex 3020 long POST
My Optiplex 3020 will power on, spin the fans at 100% for 2 minutes, and then will POST and boot. This happens from a reboot or a cold startup. I have replaced the power supply and the RAM, same issue. I have reset CMOS and replaced CMOS battery, same issue. I believe I have toggled every BIOS setting, but it still does this.
Is there any way to skip the 2 minutes of 100% fan speed before it finally proceeds to POST and boot?
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Posted August 16th, 2022 10:00
All USB devices disconnected, all PCI-E cards removed, SATA disconnected, internal USB and HDAUDIO connectors removed from motherboard = same issue
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Posted August 16th, 2022 18:00
Upon startup, immediately press F12 multiple times for Boot & Diagnostics menu. Run diagnostics and see if it comes up with anything. By the way, by pressing F12, it should either skip the 2 min. fan thing or it might still make you wait 2 min. It'll show onscreen once it's going to the menu.
If nothing shows in diagnostics, it might be down to the MB being faulty, possibly a faulty sensor, but can't diagnose from here.
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Posted August 22nd, 2022 07:00
System accepts no keyboard input until it finishes the long POST. Ran diagnostics, full pass with no issues. I guess there's just something faulty in the motherboard.
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Posted August 22nd, 2022 07:00
last resort is to flash bios if not already done, although flashing bios has risk to brick the motherboard.
redxps630
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239
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Posted August 15th, 2022 23:00
unplug all usb devices and test post again. if still long unplug all storage devices. one of your device is facing long post scrutiny.