Hi: Thanks for the advise, but unfortunately I tried all that, but nothing happening. Checked for virus, updates and all. Tried to do chkdsk but says I dont have enough previlages. I am the only user administrator.
Thought of reinstalling windows, but unable to access boot setup as the startup screen dont display on the external monitor. Only windows 7 starting screen appear on the monitor, windows logo dont appear to use function key to access boot up setting. Because system is not checking cd drive on bootup. I need to change the boot sequence in the setup.