A poor contact
Display card bad contact is lead to display card can't work stable one of the reasons, and appear bad contact is mainly has the acer aspire 5741z laptop keyboard following four kind of could cause. First, a lot of cheap motherboard AGP slot with makings is not very good, AGP tank not only can't and VGA card PCB close contact, some main board also omitted AGP slot clamp, this let us in the VGA card slots in a loose space. Secondly, is in the process of installation VGA card, some bad case behind the gap of the baffle can't and motherboard AGP slot alignment, in forced tightening VGA card screw later, after a period of time may lead to display card in PCB deformation, this is AGP display card and slot bad contact of another reason. Also, we often talked about VGA card "golden finger" itself. A lot of bad VGA card gold finger on the coating metal thickness is not enough, in multiple plug VGA card, coating metal have fall off, lead to display card gold finger in the wet air oxidation. The last one is the case in the AGP slot dust around accumulation, makes the VGA card gold fingers and main board of contact problems. Along with the power of the VGA card fan appear, this problem has appeared more and more frequent.
Solution: in view of the bad contact of the VGA card, if according to judge found to be VGA card in the size and chassis can't "compatibility", as long as trying to loosen the screw display card is ok. If you worry about computer in use process will have impact, mobile and lead to a computer running problems, then you can use wide tape will display card board fixed in its position, if don't trust the VGA card on both acer aspire 5741zg laptop keyboard sides of the case are loaded, graphics card of the baffle stuck in the middle. If your graphics card gold finger met oxidation problem, then solve the time may be trouble many, first you want to use drawing rubber gold fingers of rust stains away with, if clear after your graphics card can work normally, you are lucky if display card is not normal work, we need to use herbicides cleaning gold fingers, then in gold finger gently apply a layer of solder, in order to increase the thickness of the gold finger, be careful not to let the phase velocity of the gold finger between short circuit oh.
Second, the power supply problem
And when the CPU to upgrade the problems are very similar, when the design of circuit often cannot cope with later appeared hardware equipment of the power supply requirements. Along with the VGA card power consumption of the rapid increase, graphics card upgrade there will always be time may encounter AGP power supply shortage problem, especially in hot summer, GPU huge power consumption for main power supply, motherboard acer aspire 5742 laptop keyboard power supply circuit will be a severe test. If you are running large 3 d game, often meet with the problem of blank screen, and this time you have just upgraded the VGA card, the author suggest you it is necessary to check the main power and motherboard power supply problems. If your graphics card in winter is running well, and the summer is very unstable, so in addition to check the VGA card itself cooling, should also pay attention to the power supply problem, because in the hot summer, switch tube power supply and main board of MOS tube than the winter work 'hard' many.
Solution: if because AGP power supply shortage caused by the graphics card doesn't work properly, can be in the CMOS setup closed AGP speed function, let our graphics card as an ordinary no AGP speed function of the VGA card, if you think the performance loss is bigger, we also have a way to, is the AGP bus accelerated speed reduce a level, such as AGP4X can make it run in AGP2X. Lower AGP bus speed higher than the AGP bus speed can greatly improve the system stability. If you purchase the mainboard can adjust AGP voltage, so congratulations you, maybe you can through the improve AGP voltage to acer aspire 5742g laptop keyboard meet the VGA card higher power supply demand. Generally speaking, will AGP voltage improve 0.1-0.2 V, won't cause what hardware damage, but AGP power than the original but stable many. Finally want to talk about is that we can also listen to the motherboard manufacturer's advice, make a customer service phone or on the manufacturers website BBS, maybe there will be a exciting harvest. The author's a friend once met VGA card power supply shortage problem, he used motherboard is a well-known manufacturers a year and a half ago products, in the use of various' soft 'way cannot solve later, the manufacturer's engineers offer the mainboard posted back to the factory, by the engineer to help modify circuit in order to enhance the AGP power supply. As for whether everyone can happen to the best of 'good', that will see your luck.
Three, CMOS setup is not reasonable
The world no product is perfect, hardware product also is so. Display card development speed is so fast that a lot of new characteristics and functions, for our hardware system, it not only can't perfect support, but also will directly affect the stability of our computer. Sideband addressing the functional design of original intention is to use idle bus bandwidth to increase the bandwidth of the display subsystem, but acer aspire 5742z laptop keyboard after all, not VIA AGP standard founder, so, for most VIA display card, it sideband addressing function support are not perfect, many motherboard manufacturer for stability's sake, in the factory default Settings, close to this function, if you are VIA system in the CMOS setup the sideband addressing opened, then it ten to one that influence the stability of your computer culprit.
Then the mainboard ACPI advanced power management system has a program called VIDEO OFF METHOD, through which we set display close way, it is a pity that many of the main board to the new graphics card support is limited, so in the display into dormancy often hard to wake up after the blank screen phenomenon.
Solution: in the CMOS setup option to turn acer aspire 5742zg laptop keyboard off the problem ^_^, if not afraid bother ok BIOS brush to the latest version, can solve a lot of compatibility problem well.
Four, VGA plug on the hidden trouble
Display card on the VGA plug in many times after insertion may lead to pinhole of reed loose, make its can't and display of signal lines in male head good contact; There is on display signal line of violent pull, can also cause VGA plug signal transmission problems. For common 15 needle VGA plug, 1, 2, 3 feet corresponding red, green, blue three color signal, its normal voltage fluctuation range is 0.03 V - 0.06 V; 13, 14 feet corresponding display of line scan signal and field scanning signal, for line scan output signal,acer aspire 5745 laptop keyboard normal work voltage should be 3 v - 5 v, field scanning signal should not be above 1 v. If you on VGA plug violence after operation, display blank screen, through survey found that VGA plug pins output voltage anomaly, so basically can conclude VGA plug problems.
Solution: encounter VGA plug internal reed loose, can use solder the display signal wire male head stitch overstriking, let loose leaf to and display signal wire close contact. To check out now in the problem of VGA stitch, can find the VGA plug PCB corresponding solder joints, found that the breaking, to repair welding is ok.
Five, refresh BIOS and change fault caused by the driver
At one time, DIY groups rise a VGA card BIOS replace boom, many people hope that through the famous brand display card BIOS file brush to their own VGA card in such a means to improve the VGA card performance. Such behahior may effectively,acer aspire 5745g laptop keyboard but essentially, the use of famous brand display card BIOS file brought about by the hardware performance ascension but is BIOS file the video memory of frequency and delay caused by the reset, most mainstream display card BIOS documents have been quite perfect, impossible by changing the BIOS file to obtain the performance of the huge promotion, relative to the hardware performance very little ascension, stability of our loss may be more. The same manufacturer is the same type of display card, and their BIOS file is not the same, the manufacturer will according to the batch production of the specific conditions of the VGA card to BIOS documents must change, in order to enhance the stability of products, and we in the hands of this and brand display card point "relative" are not the VGA card, with others in the BIOS later, appear stability problem is also the normal. If you in the update VGA card BIOS later, regular appear blank screen, the game automatically exit or screen appear regular stripes phenomenon, it seems very likely you brush BIOS has a problem.
Solution: brush back into the original graphics card BIOS file is ok. Unless you really need through the refresh VGA card BIOS file to solve the acer aspire 5745p laptop keyboard compatibility problem, otherwise, or try to let the VGA card use original BIOS it, after all, brush BIOS is a troublesome issue. For the mainstream display card, refresh BIOS files won't have better performance, otherwise, the network blots out the sky high performance graphics card the choose and buy this paper will not only talked about VGA card core frequency and video memory frequency, and don't talk about VGA card BIOS version number.
Above is deal with simple graphics card fault several techniques do not preach, I believe you in the "study" after finish this article must can loudly say: "let blank screen go away!" Of course, if you have problems are more serious,acer aspire 5745pg laptop keyboard such as graphics card chip is anxious burnt flavour or PCB, the capacitance of each variable "beer belly", that you still hurriedly to the graphics card of the maintenance station go to, because this is not display card common general order.
http://www.laptopbattery.ewebsite.com/articles/how-to-take-the-computer-transferred-to-the-best.html
http://lbl198071.blogspot.com/2012/09/how-to-take-computer-transferred-to-best.html
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