The initial doubt is the graphics card problem, pull out the graphics card, with the motherboard set to display normal boot. Changed the graphics card and can not boot, arguably, if the graphics card is broken, I change a video card should be able to ah, why change the video card display or no response?. What's the matter?
This question is a little general... Plug in graphics card boot reaction? Has not been reactive or normal, there is a black screen when entering the system... Not specific reasons, too many mobile phones, specifically, trouble, I give you a few possible, first, motherboard slot, even under the power of the next gray try, two resolution and graphics card does not match, three is the graphics card is broken, two are broken.
Would you please tell me if there is an alarm after the boot?Video cards and other damage will have alarm sound, if there is no alarm sound, on behalf of the host does not work properly.Host does not work without the self noise or sound alarm, general computer power supply problems, then clean up good computer hygiene, including graphics and memory of the finger, remove the dust caused by short circuit protection, and then "substitution" began to look into the problem from the power supply.
You put the battery button on the motherboard down for a few minutesThe motherboard time may be inconsistent with the display.
If you don't show it if you make sure the video card you're using is normal, you may suspect that it's your BIOS settings.Don't know what your computer motherboard, boot into the BIOS press del or F2 key, find the power options, find VGA graphics card or graphics options, see if it is forced to set the output of integrated graphics, this option is automatically changed on the line, now a variety of different motherboard, motherboard the BIOS is also not the same, but in general this is interesting, you should have an understanding of the computer, BIOS find the relevant options. My analysis is that the BIOS set up a problem, resulting in the output of the display does not recognize your independent graphics card.There is to clean up the computer dust, dust may also affect.There is not compatible with the hardware, you change the memory bar, or try to change the memory slot, it may be better. This is a bit strange, I do not know why.
Is not a graphics card problem, you look at the capacitors on the motherboard is not complete, sometimes the motherboard capacitor burned burnt, but the computer still can open normally, but sometimes the display cannot display and automatic restart and shutdown. Your confirmation card okay, estimate the hard line and memory are replug too, is the case, the problem on the motherboard
