When turning on the computer there is no signal detected by monitor

Aljosa81

Commendable
May 12, 2016
2
0
1,510
I turned on my old computer after a few moths of not being used and my monitor says that there is no signal. I tried everything I could think about. I connected by using vga and hdmi. Then I took out my graphic card and tried the motherboard build in graphic card and got the same results.

I know the monitor works cause I'm using it with the new computer. I tought I could be the graphic card, but the the build in graphic card should work. Then I was thinking it could be the mouther board but the computer sounds like its starting normally. And when the computer was last ruining there where no problems.

Any ideas on what could be wrong and solutions would be appreciated