Am using Toshiba satellite M200 with Windows 7 Ultimate. Oflate I have been having a strange problem. Whenever I log in to windows within minutes the monitor display goes off and in place some vertical n horizontal lines as in pixelation appears, the hard disk indicator remains on indicating the hard disk hangs, cursor could not be moved. Only way out of it is force shut down. But again the problem starts. Then the system was dismantled totally (ofcourse by an expert) and cleaned the fan, applied fresh layer of thermal grease, checked for memory problem, etc. But no use, the problem remained as before. Then accidentally I found that it hangs with power cord plugged in. If i use the system with just battery power things are fine. The moment power cord is plugged in sys hangs. Changed the power cord, checked for the output voltage n everything seems to be in order. Now every time i shut down or hibernate the sys, plug the power cord to recharge, after one hour remove it n use they sys with battery power. Other sys diagnostics showed no error like memory, display/graphics, hard disk etc….
Could anyone decipher what could be the problem that causes the monitor/sys hang when the power cord is plugged in?
The authorised service people extort money…at the drop of hat they ask me to replace any component which would take half of my monthly salary, ofcourse excluding the motherboard…LOL.
Any help is greatly appreciated since once it is repaired I can dispose my laptop and can go for a desktop with Ubuntu. Thanks in advance for all those who come up with suggestions and help.
