E.Bhu.GnaanaPragaasan

Hi! I'm E.Bhu.GnaanaPragaasan from India, Tamilnadu, Chennai. My PC is very old one, but not bad. Yesterday its Moniter's brightness get low suddenly when I'm working on it. I've check the moitor's settings. The brightness is in full only. Then what is reason of the problem? Even I change the color setting of the moniter from High color to True color, there is no difference between them. Both are looking like High color only. Can you help me to solve this? Operating system:Microsoft Windows XP (32 bit) Service Pack 2 System root: C:\WINDOWS Available physical memory: 1016 MB CPU: Intel® Pentium® 4 CPU 2.40GHz Drive Info: C: 9.77 GB D: 19.53 GB E: 45.22 GB Internet Explorer: 8.0