I have posted this question befor as well but replies didn't work and now I am posting the questions with details. So if someone of you is able, please help men.
Details of the system :
Main Board K7SOM+
Processor AMD Duron 2G Hz
Chipset Sis740 Northbride and SiS962 Southebirde
Embeded 256-bit 3D AGP Graphics Accelerator with 64 MB frame buffer
Tow 32-bit PCI and one CNR Slot
1) Sometimes, it stucks just before arrival of Windows Desktop and remains there for ever
2) Sometimes screen goes blank after appearance of Windows Desktop
3) Sometimes screen remains blank after restarting
4) system doesn't run even in Windows XP safe mode
There is no problem with monitor , I have checked it on another system. I can't use my system any more because any of the above 4 problems occurs when I start my PC. Someone suggested me to remove all external peripherals and than start again . I did but it didn't work. Personally I think that there may be some problem with graphic card. Please suggest me some solution.