flashes

i don't know what is going wrong with my PC. it frequently freezes. while executing an application or playing a video or a song it suddenly stop functioning. mouse cursor stops responding, sometime monitor flashes and then again i have to restart my PC and then again after some time same thing...

Hi frnds, i am having a strange problem. I am having a lenovo sl400c notebook and it is working fine till last week. I have dual os win xp and win 7. Working with both os is fine. But when i shutdown from win xp, it doesnt shutdown but it reboots.... shutdown works fine in win 7. but in xp it...

A new development by Dilip Krishnan and Rob Fergus of New York University allows a camera to photograph images at night without an intrusive visible flash. Once their development reaches mainstream cameras, you can say good bye to persistent visions of splotches after a photo-shooting session...

i m nt able to access orkut thru operamini again as some blue screen flashes up when i try to login. plz help!

I am so fed up with my pc.................it was fulll of spyware n viruses n stuff....so i formated it n re-installed windows (xp with sp1). even in a freshly installed windows, norton av 2004 showed a virus Bloodhound.w32.something in a file C:/windows/system32/tft-something n couldn't do...