Following a component upgrade on a corporate desktop system, the machine powers on and system fans run at maximum speed, but the monitor displays no signal and the keyboard status lights remain unlit. No diagnostic beep codes are emitted from the motherboard speaker. Which of the following initial actions should the technician take to isolate this hardware failure? (Select TWO.)
- Verify that the auxiliary 8-pin EPS12V CPU power connector is securely attached to the motherboard headerCevap
- BReinstall the graphics controller drivers by booting the operating system into Safe Mode
- Reseat the memory modules and test system boot using a single module in the primary DIMM slotCevap
- DReplace the installed desktop DIMM modules with SO-DIMM form factor memory modules
Cevap
The technician should verify that the auxiliary 8-pin EPS12V CPU power connector is securely connected and reseat the memory modules while testing with a single module in the primary DIMM slot.
When a computer powers on with fans running at high speed but shows no display, no POST beep codes, and unlit keyboard LEDs, the system is failing early in the power-on self-test (POST) process. The most common physical causes are missing CPU power (the auxiliary 8-pin EPS12V connector) or unseated/faulty memory modules. Checking the EPS12V power connection ensures the processor receives adequate voltage to execute BIOS instructions, and isolating/reseating RAM modules rules out memory initialization faults.
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Pre-POST isolation of power delivery and RAM installation issues