I hav proview 15

Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

try reinstalling operating system from back up cd. If that do not resolve the problem, contact a good pc hardware engineer or chiplevel service engineer. They can solve the issue. Hope it helps

I HAV SOLUTION PLEASE CONTACT WITH ME AT sachin.5284@gmail.com

BSC25-NO347 E1MWFL21017 , i have onida black 300 21" tv - in that LOT no is given as shown above - iam babu , computer hardware engineer, from bangalore,9986222774, - i have replaced LOT in my tv - please cal me immediately - i also need very big help from you

hello,
i think this problem accure due to chage of CRT CATHODE. if you are not a hardware engineer then check it from hardware engineer. any crt monotor have 3 RGB Cathode to release electron on screen. the electron comes shodow mask and create a pixel on the screen the pixel make a picture. The RGB color make the perfect picture. if your picture is dull then i think that happen due to less negative chage of Cathode or any Crt base Bios ic is failior. so you have to checked it from hardware engineer.
ok
bye

no can do. you monitor is dead in the water.
lost of focus, and intensty. all point to one thing.
by the way, do you have the correct video driver installed???

i have a some problem

on crt monitor adjust screen referesh mde to 75Hz

or go to windows safe mod e

You can see your monitor ranges ;
right click desktop -> properties -> settings -> monitor
You'll see Screen refresh rate here
under the that there is a box "Hide modes that this monitor cannot display" click that.
Now computer shows your monitor range in list. When you select bigger value different than list , gives error " OUT OF RANGE "

no need sistamatic digram please elaborate the problem u are facing iam a chiplevel engineer can help u we can repain the computer only on 2 side there are more circuits in inner layers wher we cant repair please elaborate the difficalties you find i might be help to you

If it is samsung TFT monitor problem solution is to press and hold menu buton for more than 10sec.
Good luck.