|Tell us the make and model of your brand name system, or if you have a generic desktop system, the make and model of the mboard. |
The specific model of a brand name system is shown on a label on the outside of the case somewhere, or it can often be determined by going to the brand name's web site.
The model, sometimes the make, of a mboard in a generic desktop system is usually printed on the mboard's surface in obvious larger characters, often between the slots.
The model is often also displayed on a logo (graphical) screen early in the boot, but it's often not as specific as the specific model number.
For Dell computers, they have a Service Tag number - the specific model can be determined by using that on their site, or can often be determined there automatically by you downloading some software. The Service Tag number should be on a label on the outside of the case, probably on the bottom on a laptop, on the back on a desktop, and is often also shown in the bios Setup.
The term CARD is frequently mis-used. A device adapter on a CARD installs in a slot on a desktop mboard (and RARELY on a laptop mboard) inside the case, and is removable.
Any device adapter that is built into the mboard on a computer and cannot be removed IS NOT A CARD !
If your video adapter is on an actual CARD on a desktop computer, the code 43 may indicate the card may has a poor connection in it's slot, or if the card has a fan, the fan on the card may have failed or the fan is clogged with mung (dust, lint, etc.), both of which can cause the video chipset on the card to overheat and possibly be damaged.
If you have a video card installed in a mboard slot, tell us what make and model it is.
Unplug the case/power supply, or switch off the AC power to it otherwise.
Power off your monitor.
Open up the case by removing the left side panel as seen when you're looking at the front of the case.
Make sure the video card is all the way down in it's slot.
If it has a fan, examine it to see if it and/or it's heatsink is clogged with mung, and if it is remove the mung but DO NOT use a vacuum cleaner to do that.
If it has a fan, temporarily connect the AC power to the case, boot the computer, and make sure the video card fan (and cpu fan) spins okay.
While you're in there, if the cpu fan/heatsink has mung (dust, lint, etc.) on it, clean it off, but DO NOT use a vaccuum cleaner to do that (they produce a tremendous amount of static electricity when running, and anything connected to them can discharge that to your components) - use canned air, or an air nozzle if you have access to an air compressor, or an artist's brush that can be used in small spaces, etc. It may be difficult to clean the top of the heatsink under the cpu fan - the most likely place to have mung on it - and the bottom side of the cpu fan blades unless you remove the fan. If you have a case fan, clean that too if it needs it.
Or - if you have a desktop computer, your problem could be caused by a failing power supply, which may or may not have damaged the video adapter.
Failing power supplies are common and can cause your symptoms.
Check your PS.
They often partially work, fans and hard drives may spin, leds may come on, yet you may get no video and the mboard will not boot all the way.
See response 4 in this:
If it is failing, you can usually replace it with any decent standard sized standard ATX PS with the same capacity or greater.
Standard (PS/2) power supply size - 86mm high, 150mm wide, 140mm deep, or 3 3/8" h x 5 7/8" w x 5 1/2" d , or very close to that, though the depth can be more or less for some PSs.
Don't buy an el-cheapo PS.
See response 3 in this:
Your power supply must have at least the minumum capacity required to support a system with the graphics card you are using installed, or the max graphics card you might install in the future.
(Onboard video - video built into the mboard - IS NOT A CARD ! )
If that info is not in the ad for the video card, you can go to the video card maker's web site and look up the specs for the model - often under system requirements - the minimum PS wattage, and, more important, the minimum amperage the PS must supply at 12v is stated. If you don't find that, any card with the same video chipset including any letters after the model number has very similar minimum PS requirements. Some power supplies have two or more +12v ratings - in that case, add those ratings to determine the total +12v current capacity.
If you're a gamer....
In most if not all cases, the max capacity rating of the PS is an intermittant rating. It's recommended that you do not load your PS to any more that 80% of that rating if you are going to be using something that puts a constant load on it, such as playing a recent game for hours on end. In that case, you multiply the min capacity stated for the system with the particular video chipset on the card by 1.25 to find the min. capacity of the PS you should get.
If your video adapter is built into the mboard, or if it's a video card in a slot, code 43 can indicate you have a software problem - your display drivers are corrupted for whatever reason, or your hard drive is failing and that's what caused the data corruption.
You can get the code 43 error if you didn't load the mboard drivers after the last time you loaded Windows from scratch, or if you didn't install the video drivers correctly, BUT video drivers that were working fine previously do NOT normally suddenly get corrupted - usually either the hard drive is failing, or the power supply is failing, or the video adapter is failing.
Check your hard drive with the manufacturer's diagnostics.
See the latter part of response 1 in this:
(thanks to Dan Penny for this link:)
Hard Drive Diagnostics Tools and Utilities
If you don't have a floppy drive, you can get a CD image diagnostic utility from most hard drive manufacturer's web sites, but obviously you would need to make a burned CD, preferably a CD-R for best compatibilty, on another computer if you need to.
If the hard drive itself tests okay, any data problems found can be fixed, one way or another.
If there's nothing you can find wrong with the video card's fan or the power supply or the hard drive,
- if your desktop mboard has both onboard video and a video card in a slot, remove the AC power to the case, remove the video card, connect the monitor to the onboard video, and try that.
You could try un-installing the existing video software the proper way in Control Panel - Classic View - Programs and Features, then installing the video software the proper way, but that may not help.
You DO NOT install drivers for a video device while booting into Windows, if the software for the device has not been installed yet - when Windows detects a generic device while booting, you allow it to search for drivers, it doesn't find any, and it wants you to show it the location of the drivers - CANCEL that, continue on to the desktop, and install the software for the device using the proper installation from a CD or the proper installation file that you downloaded from the web.
If you DID install drivers that way, go to Control Panel - Classic View - Add/Remove Programs and Un-install the software you installed, reboot, DO NOT install drivers while booting, and install the software the right way !