DOCTOR
> Dead PC?
> Win11 update error
> TPM 2.0 upgrade
PC won’t post to BIOS
I’ve had my computer since 2013: Intel i5-4670K, Gigabyte GA-Z87X-UDH3, 16GB Corsair Vengeance DDR3 1600MHz RAM (two 8GB sticks), housed in a Thermaltake case and powered by a CX Series 80 Plus Bronze CPU. When I try to boot, the PC turns on for about two seconds, then turns off and tries to reboot without success. I can’t even get into the BIOS.
I’ve switched out the power supply, tried only one stick of memory, and switched out the CPU cooler to no avail. I suspect the motherboard is at fault, but nothing obvious shows on the board. Your advice would be appreciated. —Paul LoGrasso
Assuming you’ve already stripped the machine back to its core—booting with all non-essential external peripherals and internal components (including drives and expansion cards) disconnected, the lack of any LED debug codes to offer even a hint of what
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