Please Help me!!! my computer pentium 4, turned on, but no display

muhammad zainul amin

Commendable
Mar 12, 2016
2
0
1,510
First, i tried removed memory ram and cleaning with eraser but it's not working.
second, i try to clean mobo from dust and dirt it's not working.
third, i tried to change cmos batery, its also not working,

what's wrong on my computer ?