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My PC is showing colored lines and freezes and restarts moments after I starts playing some video. I have also seen this happening when I open an image. It will show the problem the instant I start video playback. I thought it was some problem with the driver but the lines are visible even on the bios boot screen when restart.

My hardware is as follows : intel core i5 750 CPU, ASUS ATI Radeon HD 5450 graphics card, ASUS P7P55D motherboard, 2Gb Cosair DDR3 ram sticks x 2, 2 SATA hard drives,

It could be problem with Motherboard, video card, RAM or drivers. I am looking for some tips to identify the component that caused.

Thanks..

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3 Answers 3

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It sounds like your graphics card is overheating. This can cause lines and artifacts on the display. You should use a monitoring tool like GPUTemp. It could be the thermal paste on your GPU is not properly transferring the heat to your GPU fan.

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  • I will check that.. but mine is ASUS 0dB basic card with no fan but just a heat sink.
    – GKL
    Aug 5, 2013 at 5:35
  • The thermal paste and the heat sink might not be properly set.
    – Keltari
    Aug 5, 2013 at 5:38
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This smells like a overheating and I would suggest that you test your hardware.

I've made a post here on how to stress-test your CPU, RAM and GPU, it should pinpoint where the problem lies.

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It sounds to me like your computer's CPU heat sink is probably caked with dust. I would purchase a can of compressed air and blow the heat sink out.

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