Remark: the two decorative LED lights under the host are bright, but the drive light is not on, and the reset key does not respond. The main key must be long enough to shut down. 1 I have tried to pull out the independent graphics card. The result is the same as the title. 2, I tried to unplug the independent graphics card and memory, and the result is the same as the title. Excuse me, what's the situation?Memory and independent graphics cards have been polished several times, and I hope to give some advice to the maintenance master, I haven't moved before. A month ago, or good.
Find the CMOS board jumper shorted to CMOS battery discharge process, and then find a dry clean toothbrush to clean your motherboard dust, clean the board with a rubber finger, estimated OK!
You try to button the motherboard on the battery down, about 30 seconds, and then look at the machine to see if you can, if not, the hard disk data cable unplug, boot, see the motherboard, there are tips, information display, you tryHave advised you to dismantle electronic test, I helped people have done a lot of this situation
When you have a problem, no matter what the machine, you must be clear, something is broken, and you try again is the same, in vain time and effort, investigation as follows:The old machine, the initial estimate is the motherboard or graphics card.1, make sure the monitor is OK; try using another machine2, to ensure that the graphics card is no problem; to the graphics card to try other machines3, ensure memory CPU no problem; same 24, the hard disk CD-ROM all do not connect the keyboard and mouse, brush each contact place (memory, just insert a memory card, only to connect CPU power supply), motherboard, memory, video card, and take out the motherboard small battery, reset BIOS (short circuit about 6 seconds)5, the fourth step is not enough, then change the power to try;6, if it does not, and check whether the motherboard, drum up capacitor or where burned, or the motherboard where no deformationIf not, you may have to repair the motherboard.
I'll give you an analysis at any momentPower failure will also lead to failure to boot, this many people do not know. (power on, but not on power)If memory and graphics card are not bad, is not the display line loose? Or is the monitor's line plugged into the integrated graphics card?If the 1 months did not use, you can remove the battery on the motherboard, and then short-circuit the motherboard, that is, the discharge of the motherboard, I do not know if you do not understand..Other hearts are out of the question!
First, there is no "beep" on the boot, indicating the following components (one) problems:1, motherboard;2 、 main power supply;3, memory, graphics card;Two, after the start of the host panel on the two lights (one is red, the hard disk light, another is blue or green, the power indicator light is not long off,) that drives a long time in reading, this phenomenon shows that +12V power is low;The main reason for the low power supply of +12V is that:1 、 +12V board power circuit of mainboard;2 、 main power supply of +12V power circuit or +5V power circuit;3 、 video card power control circuit;From the failure rate, most of the computer failure caused by the host power, so I suggest the landlord first borrow a reliable host power try;If the fault remains, then it is likely that there is a problem with the motherboard (because the landlord has removed the video card in the preliminary test);Three, dust is the leading killer of electrical appliances, computer with a lot of dust, due to the micro conductive fault caused, especially after long time use of computer, micro conductive electric breakdown leads to more prone to;Clean inside the computer, it is best to use 1 inches of paint brush, gently clean the motherboard, graphics card (including card slot), memory (including memory slot) inside the dust, to be especially careful, don't damage other parts;After cleaning, you should plug in the hard disk, motherboard, power, memory, graphics cards and so on, to ensure that they are tight and not loose.
