Member Avatar for Jelyna

Hello, all.

This morning, my PC won't boot. It just displayed the blue screen showing Intel's logo and the Esc, F9, F11 options for Boot Menu, Diagnostics, etc.

I tried unplugging the powerchord and pressed the power button for 20 secs, then I plugged again the powerchord and now, the monitor wont display anything (except black screen, of course), and it automatically shuts down.

Two days ago, my PC hanged twice while I'm using Ubuntu 11.04. Windows 7 is also installed though I seldom use it.

Here are the specs:

Intel Core 2 Quad Processor Q6700
2048MB DDR2
320GB 3G Hard Drive
Nvidia GeForce 8400 3D

The fans are turning when I checked it. But I just can't open the casing and check the drives and motherboard, I have to get it to our Tech Support (company policy). However, I really like to seek first your opinion, see if I can do it myself.

Thanks in advance. I'd really appreciate any help.

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  • Latest Post Latest Post by jingda

Dani AI

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Summary and diagnostic framing: ’s Pavilion shows the Intel splash/boot-menu keys, then the monitor goes black and powers off while fans keep spinning. Ubuntu had hung twice before. That pattern (splash appears but POST does not complete, and video disappears) is characteristic of an early POST failure — commonly caused by GPU, RAM, PSU, motherboard/BIOS, or less often a failing drive — but it is not conclusive on its own.

Non-invasive checks (no case opening): confirm the monitor and cable first — try the monitor and video cable on a different PC, try a different cable or input (VGA/DVI/HDMI), and check the monitor’s power LED and input-selection. Disconnect all USB/peripherals and external drives, unplug the PC for 60 seconds, then power back on. While booting, listen for any beep codes and note front-panel LEDs or blink patterns; these codes are the most direct clues if POST fails. Also try a different wall outlet or power strip.

Checklist for the technician (safe, prioritized inside-the-case diagnostics): with mains disconnected, discharge capacitors by holding power for 10–20s, then clear CMOS (remove/short CMOS battery or use jumper for ~30–60s), reseat and test memory one stick at a time in the primary slot, reseat/swap the graphics card, disconnect all storage and try to reach BIOS/POST, and inspect the motherboard for bulging capacitors or burn marks. Test the PSU with a digital PSU-tester or by swapping in a known-good unit (preferred to improvised paperclip tests). If POST completes after removing drives, focus on the HDD/OS; otherwise the failure is hardware-level.

If hardware checks look good, boot from an Ubuntu Live USB or Windows recovery media and run memtest86 to verify RAM and a disk-check to rule out filesystem/OS corruption. Given company policy about opening the case, hand the above checklist to Tech Support so they can run these prioritized, safe diagnostics.

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Member Avatar for jingda

1) Do you hear any beep sounds?


Steps:

1) Clearing the CMOS
2) Make sure the computer is receiving enough voltage to power up
3) Take everything out of your computer and place them back again. They maybe lose. You can also check for faulty parts or blown fuse.
4) Is the power supply voltage the require one for your computer.
5) Check whether any screw inside your computer is loose. Shake the computer case to hear whether there are loose screws. if there is, tighten it. You have to open the case first.

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