When I turn on my computer, fan goes on lights come on and it sounds like it is going through boot-up. However, nothing shows up on my monitor (black screen). I have replaced the video card and no luck. I also have a 4 slot USB II card in a PCI slot that had active ports. Now when I plug something that should light up when I plug it into any of the ports, nothing works.
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Continous beeps usually mean the motherboard or the power supply, Try another power supply first and see if it will boot, if not the motherboard is faulty, if the prossesor was faulty you would no beeps the fans would run but nothing on the screen. hope this helps.
It sounds as though you might have a problem with BIOS.
You should remove your motherboard battery (little round silver disc) and if you can find (or Google motherboard model#) the CMOS reset jumper, you can remove the battery for 30 seconds and put it back in and reset the CMOS, then see if it boots. If it doesn't, you might need to flash the BIOS, which is not recommended unless you know what you are doing.
Now when you say blue power light, what are the rest of the lights doing, does the hard drive light flash, does the fans turn on, does the hard drive make it's spinning noise, if so you may just have a bad LCD inverter which is very common and about a 40$ part. you can test this by trying to hook the laptop up to an external monitor and see what happens.
Just the LED's blinking but can you hear the fan on the processor run? If not most likely your power supply, SMPS, has failed. However try starting it with a working one of the same capacity to check and then buy your own. However if your PC shows no change on using a working SMPS, the the problem could lie in the RAM sticks or MB...............sodeep
due to current fluctuations my smps and ups was burnt, so i called the technician he replaced the ups,smps and motherboard ,and then my computer turned on when it was booting it showed a message like "media test failure check cables" and then i can see my desktop with all icons.but i dont see any sound symbol on the task bar the place where we can time.when i open the control panel>sound and speech options it shows like no audio device.
when i try to play any song through windows media player it shows a message like sound card or sound controller is not installed in the computer install the sound card.and my computer has internal sound card. what should i do now, shall i purchase new sound card so that i can connect it to pci
Sounds as if your power pack might have a problem.blown fuse ect.I whould remove the cmos battery and or change jumper pin setting to start fresh in the bios settings.after removng the cmos battery,Make sure to put it back in before you re boot your computer. Good Luck garydalel