|"to say it has encountered a problem and has to close and to send report?"|
No these are probably separate problems.
Your screen is controlled by your Graphics Card which is controlled by a Driver. There could be a conflict with the Driver in which case you will want to update your drivers for your graphics card.
My impression was your screen was fading to black from the top down which would be a graphics problem or monitor problem and could cause flickering. If this is not right then let me know.
"my screen will just start to close"
Is not very descriptive.
Going by this clue...
"then my desktop icons flash and reappear"
It could be your back ground stays but all of your icons disappear then come back. If that is the case then something is crashing your Explore.exe which will auto-restart causing your icons to disappear then come back. The most probable cause for this problem would be the Anti-Virus and would require a different troubleshooting path.
It is hard to know what is going on until you tell me which type of problem you are actually having.