HELP QUICK, iMac blurry in verticle lines, lines in loading screen, loading screen yellow.

Hey all,
i have a problem with my mid 2010 iMac, i have weird lines that appear on the loading screen and the apple logo looks distorted. the loading screen takes a longer time to load and when it finally does there are vertical strips that appear on the screen and alternating strips are blurry and distorted. i tried to restart it and the loading screen turned yellow with blotches in it.
I fear it is the graphics card which is at fault. is there anyway to check this?
i

FelixGarcia wrote:
Anyone know what causes this?
Specifically, no. Generally, this seems to be a graphics board problem. There's some controversy regarding its cause, but an old, faulty graphics board and too much heat are popular choices. This happens not infrequently with computers, across platforms.
The way to avoid it? Certain runs of computers seem to be more prone to this problem, but consistently low temperatures seems to keep this problem at bay.

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Anonymous UUID:       0CC51978-99A7-1665-7EFF-A04BF2E05D6E
Sun Aug 3 20:45:04 2014
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HELP QUICK, iMac blurry in verticle lines, lines in loading screen, loading screen yellow.

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