no picture while watching any video in any format excluding flash. All i get is black screen and sound is working however but no picture ... This is a common error, yes i have researched on it yes i have downloaded many codecs such as KLITE and windows media codec packs. My problem was temporarily solved by installing one of these codecs but then after a few weeks it seems to have come back. From the little information i found it seems to be a "Graphics overlay problem", don't know what that is im quite week in this area it seems. And im sure its not a codec problem because i uninstalled all my downloaded codecs and within the temporary time period that my video used to work my videos did work without these codec packs so im quite lost here. Please help me fix this issue. See the thing is i sent my laptop in to hp and when i got it back i had to reinstall everything. No there is no potential viruses and i did install almost everything because i have about the same amount of hard disk space as before.