Member Avatar for salicia

Hey guys! im new here, and generally good with computers, etc. I have been having this problem for a while now, and cannot seem to solve the problem. When i turn on the pc, everything runs perfectly fine, except my monitor does not turn on. It stays black. If anyone can give me any resoultions, i would really appreciate. Its a windows vista!
Thank you!

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For : the phrase "monitor stays black" can come from two very different faults — a failure before POST (motherboard/PSU/RAM/GPU) or a failure after POST (video output, monitor backlight, or drivers). and covered some quick checks; the following expands into diagnostic steps that narrow the cause without repeating those basics.

If the PC appears to boot (fans, HDD activity, Windows sound, or NumLock/CapsLock toggles work), suspect the video path or the monitor’s illumination. A simple, noninvasive test for LCD backlight failure is to shine a bright flashlight very close to the screen in a dark room; a faint desktop image means the backlight or inverter/power board is dead and the panel needs repair or replacement. If nothing is visible but the GPU fan(s) are not spinning or the card’s auxiliary PCIe power plugs are loose, reseating the card and confirming its power connectors are attached can restore signal. Clearing CMOS will reset BIOS video selection if the board is set to an unexpected primary adapter.

If there are no POST signs (no beeps, no drive activity), focus on motherboard/RAM/PSU. Fit a system speaker to read beep codes, test with one RAM stick in the primary slot, and ensure the 24‑pin and CPU 4/8‑pin power leads are firmly seated. A faulty PSU can supply lights and fans but not enough stable power for the GPU or CPU; substitute a known-good PSU only if comfortable doing so.

If Windows actually reaches the login screen but shows black after login, boot into Safe Mode/low‑resolution mode to uninstall or roll back the video driver. For any internal work, use proper ESD precautions and disconnect mains power first. If uncertainty remains after these steps, professional diagnosis is recommended.

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Member Avatar for aVar++

Have you tried a different monitor / TV?

Member Avatar for ronald577

I think this thing happen because of cable.First check your pc's wire which is properly connected to cpu or not? if it is connected then its good other wise change the cable.

Member Avatar for aVar++

Wire's are connected to the motherboard or graphics card not the cpu...

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