I powered the CPU and it started. But the monitor was not displaying anything. Light of the monitor flashed but was not stable. After an hour I started it again and worked normally but after about an hour it shut down and not taking start again. How to fix up the problem?

How to make an audio file itself louder?

I don't mean adjusting the sound level on the computer.

Thanks.

How to set a warning alarm for a low or critical battery condition for my laptop? I want to know it.. Please do help me.. Thanks!
 

My monitor flickers too much. I want to change the refresh frequency of my monitor but I'm not able to do it. How to change it? Where will I go? Please help. 

I need to change the link color during moving mouse over the link in HTML. What to do for this purpose?

I don't hear any sound when I turn up the volume on my laptop (Toshiba satellite).  However, when I plug  in my headset, I hear the audio working fine.  What do I need to do to fix the sound? 

I have a problem with my monitor. When I open my computer the monitor works properly but after 30 seconds it suddenly turns into blank/black. What happen to my screen? How come it remains blank even if my CPU is still processing and working? 

how to transfer files from CP to PC using the built-in bluetooth in the computer? I've been trying for some time now but my computer is not able to detect my cellphone. What's the matter? How to solve this problem? 

I've been trying to transfer my photos from my Kodak camera into my PC. The problem is when I'm about to open the folder I can see no pictures. why did it happen where in fact I'm able to connect my camera into my computer? i just can't see the pictures. please help!! 

I have a new printer and i would want to install it.

Sadly, I'm having hard time doing it.

Can someone give me the guidelines on how to install the print head?

Thanks!