|FAQ ID # 58581|
|Last Update : 2011/01/29
Rating : Not Rated
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|Question / Issue|
|What causes artifacting/screen corruption/garbled graphics?|
|Answer / Solution|
There are a few things that can cause it. It will be PSU, video card, RAM, a corrupted driver, or rarely a bad motherboard (usualy bad memory slot/controller).
1) If it is a new build, make sure your PSU meet both the wattage AND the amperage requirements, the Amps are a larger factor thatn the wattage. If you are running under the minimum amp requirements, it is likely you will have screen corruption or other issues.
2) Make sure your PSU is providing proper voltage output. Which is probably the most common cause. You can have a PSU that meets spec, but it can be malfunctioning and not properly providing proper voltage. To test, reboot, and go into your motherboard BIOS. You are looking for a section called either Hardware Monitor/HW Monitor/System Monitor/PC Health Status. Once in, you need to look for the output on +12V, it needs to be between 11.4 and 12.60 volts, if it is outside of that range or not stable then that can be the cause of your artifacting. Please test a different PSU.
3) To make sure it is not a driver issue, please download the latest drivers from our site. When running the installer you will have an option to do a custom or express install. Chose Custom. Under the box where you have an option to pick what options you want to install. You will see perform a clean install. Check that. After it completes removing the driver. The system will reboot. From there it will install the new driver.
4) Do a hardware test on the graphics card. Download OC scanner. Run the test for at least 10 mins. If the card passes without artifacts. Then the card is likely not the source.
5)Temperature issues. You can check the temperature of the video card using our Precision software ( http://www.evga.com/precision/ ). The software is supported on XP/Vista/Windows 7 and works on Geforce 6 series cards and higher. The maximum temperature on most 8 series cards and below is 85C. The 9 series and newer cards can take up to 100C. The 465, 470, 480, 570, and 580 are rated to 105c. While the 430, 450, and 460 should not exceed 90c. When you start to approach these temperatures the card can artifact. You can either improve the case cooling on your system or use the EVGA Precision program to manually change the fan speeds higher.
6) Test system RAM. Goto www.memtest.org and download Memtest86+ V=4.20 (precompiled ISO). This ISO will make a bootable CD, boot from the CD and let the memory test run. Let it run 2-5 passes. If it takes errors, strip the memory down to one stick at a time, and test the modules individually and see where the error comes in. If it is not from a stick, then start testing the memory in different slots to narrow it down to module or motherboard.
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