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Master
3,940 Answers
- Posted on Feb 05, 2010
Re: Screen will not come on hard drive light no light...
Things to check:
- Power led on the front of the tower, it should be solid green when on. Flashing Amber is generally an indication of a bad power supply inside the tower
- Power LED Solid AMBER indicates system is not finishing the power on self test (POST) and you remove all connections from the tower except power and try turning on again. If no change, remove all PCI and PCI-E cards from system, try again, no change replace motherboard.
- On the back of the tower are 4 diagnostic LEDs near the ps2 ports marked ABCD, after the POST, during a normal boot the will flash in several sequences and with boot is finished all 4 should be green. If they stop an a different pattern, then that indicates a failure Yellow Yellow Green Green indicate bad RAM for example
- If the LEDs on front and back are Green then the system appears to be booting but the monitor display is not functional
Checked power supply with a computer power supply tester, or a multimeter? Just wondering. Don't rely on lights lighting, and fans spinning, to think your power is okay. It may have a weak voltage power rail, and not enough power to turn the Processor on. Test your monitor on another working computer, without your monitor's cable. Works? Now try your monitor cable.
Can you post clearly the things that would happen upon turning on your computer. like on the boot up process and if you can go to the bios menu.. thanks
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