i have a compaq presario cq-40 327 tu laptop of 2gb ram and 250 gb hd,windows7 32 bit.my laptop is 2 year and 3 month old.now a days ...my laptops lcd screen becomes sometimes blurry.various types of color started cominng into my display..sometimes this problem prevails for few minute and goes back automatically.........& sometime i have to shut down the laptop......In the start-up sometimes the screen becomes yellowish....and after logging into windows all become normal.......and the agin become blurry....this problem is continuing till two months back...but now it increasing....one day i do a system restore and enter the bios menu......the problem goes off automatically.........but then started agin..


in the safe mode before logging into system the problem remains....but after logging in ...it goes off


my display adapter is-- mobile intel(r)45 express chipset family..............

is this a sw problem or hardware problem???????
how do i fix it?????