laptop lag - cant find reason

Dado Bee

Reputable
Feb 17, 2014
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hello :)

so my problem is, that my HP Elitebook 8460p is laging, but the weird thing is, its not always laging. I have Windows 7 ultimate and i got a Intel HD 3000 Graphics card. I made a newinstallation of Win 7 but that did not really helped.

When i watch a movie the first minutes its very pixely, i got black big sqares on the screen and sometimes the whole screen gets grey. Or when i play games (online and offline) they lag horribly. After 20 minutes or so its getting a bit better. What can cause that ? i think if the graphic card would be the problem then it would lag all the time ?

thanks in advance :)

mia