Pc does start but monitor is blank but its light is on
When pc is started the normal lights and sound appears but monitor is blank , the monitor lights are showing on with normal yellow light which means monitor is getting power , computer is on with all lights flashing and whirring sound of normal pc running , the only additional thing to mention is when computer was turned on the Intel logo / sign appears on the monitor for just a second then screen goes black / blank . It seems pc attemped to start normally for a second , then screen went dead , but computer still runnning with normal keyboard lights flashing and pc lights on . please advise , thanks syed.
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sounds like you have a backlight problem, the wires are known to burn off the ends of the bulbs of the back light..if you try to repair it yourself be careful the lcd screen and bulbs are frigile.. there is 4 bulbs two on the top and two on the bottom of the screen ,, keep every thing in order when taking apart
Was the PC running, and then shut down? Or, did it never start in the first place?
It sounds like it could be one of many things. Sometimes if the processor fan has failed, the computer will start up, and then shut down. Also, bad memory can cause the PC to shut down.
sounds like the operating mode is at a frequency or refresh rate that is outside the viewsonic operating specifications when in normal mode. possible solution: in safe mode access control panel, system, devices (hardware) and look for display. do a right click and uninstall. repeat right click and "scan for hardware changes". That might reset the monitor operating modes but it also gives you a chance to reinstall drivers. If this does not work, try other monitor crt/lcd to see what happens.
Are you using an ON-board graphics adapter or a separate VIDEO CARD? Some motherboards lets you set the video output to "DISABLE ONBOARD GRAPHICS" if you have installed a video card (BIOS). You may have plugged the monitor cable to the onboard D-sub connection instead of using the Video Card D-sub connector.
Normally a flashing green power light means the input it receives from the video output is too much. You may have set the resolution too high or the bit depth too high. Consult the monitor manual on the rates it can handle. To be safe, try starting the computer on safe mode just to check if it is indeed the problem. If it boots properly and you can see your desktop, then there's a chance that the setting was too much for the monitor to handle.
Try replacin a new display card. If it is fine working.ok
If not try fixing for cold solder in the video section.
I suggest video section according your report the light green LED lighted that shows the power section is doing fine.
Try to start in safe mode and check if you can change some of the video settings (resolution, refresh rate, etc). Maybe one of these settings is such that the monitor cannot handle properly.
To get into Safe Mode, press F8 as soon as you see the Gateway logo on the screen while booting the PC.
The flash light test only works with lcd monitor as they have back lights.
Double check the connections again, also, if you can borrow a monitor try it on your pc, it may be your graphics driver needs to be uninstalled and re-installed, but you will need a monitor to see.