I have a laptop and it has a VGA port ( 15 pin male stuff)

I have a TV that also has a VGA port.( 15 pin male again)

The distance between TV and PC is 4 meters.

Trying to use the TV as a monitor. Used a 5M long VGA-VGA cable. It worked yesterday. Today morning it did 4 times out of ten. Where as if I use the regular 1m long PC-Monitor cable, it always works. Going crazy over this.

Is 5m too long for the VGA driver in my PC ? Can I buy one of the VGA-Composite video converter and use it instead ? Or since the TV and my notebook both have HDMI ports, can I get a 5m long HDMI cable ?? Can someone tell me what to do ?? Thanks.