Laptops without a screen during startup.
Laptops without a screen during startup.
To provide accurate guidance, I need confirmation whether the lights are functioning properly. If you’re unsure, check if they are turning on and ensure the motherboard is properly connected—plugged in, devices linked correctly, PCIe power and EPS power working, RAM seated properly.
No illumination suggests a CPU isn't recognized. The circuit board appears unresponsive at this stage. It shows a CPU indicator, but without it, power may fail. This doesn't confirm the CPU is non-functional; various factors could be involved. The CPU seems operational. Verify the socket is free of thermal paste residue and that all pins remain straight. Examine the CPU from different angles—ideally at eye level—to confirm proper alignment. Inspect the pins, especially near the edges, for any signs of damage or misalignment.
It seems there was a small amount of thermal paste on one pin, and you cleared it using compressed air. Fortunately, none of the pins are bent, though the device still doesn’t power on.
It's late now, so I get it if you're okay with that. I might attempt to bring it to a repair shop the next day after work.
Hello, Avoid contacting any wires. Ensure your CPU power cable is securely connected in the top left area near the I/O bracket above the CPU.
I spend long hours working and avoid weekends, so I have more time. If there was residue on the CPU, I’d inspect the motherboard first. Paste should be in the socket; if you notice it, or after reinserting, check again. Remove it gently with a soft toothbrush and 99% IPA for better results. If the paste is fresh, it should be more liquid. Use 99% IPA with a new brush to clean thoroughly, as regular air won’t fully remove it.