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there is may be 2 problems 1. check your CMOS battery. may be that battery is discharge. if yes you have to replace it. 2. may be your processor is not seance by your motherboard. in that condition you have to repair your motherboard.
Hello Liz, hi, the flashing green light means its on stand by mode. when this happens, the power supply cant power on, due to... well like loose wiring, loose connections, or something on the computer. so I suggest you have it checked by a tech person, this requires that the whole PC be disassembled and reassembled.
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
if its the red flashing light on the tower, its the hard drive activity light.
when the monitor goes on stand by, does the tower retain power? (green light on and flashing red light sometimes?) Does your keyboard's scroll lock/num lock/caps lock keys and keyboard lights work?
Is the green flashing on the tower or the monitor?
If it is flashing on the monitor, then it might be tht the monitor is not gettign signal from the tower.
To check, disconnect the monitor from the tower and check the monitor. If you get a msg on the screen like no input signal or check video cable, then 99% monitor is fine.
Check for the power supply light at the back of the tower.
Disconnect everything from the computer and then press and hold the power button on the comp for about 30 seconds.
Then connect the cables and check if it is working.
Nothing on screen at start up?
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