[lynnedbears]

Can someone please try and help me.
My computer is a Mesh built for Photoshop 8GB etc etc, only 10 months old. A while back, it just kept going off in the middle of things, the screen would show - No Signal Input. I paid out for the little computer man to have a look and he put on Bullguard saying that there were a lot of viruses. Since then it has worked fine.
A week ago it went again, same thing. This time I googled in and decided to buy a new monitor. New monitor installed, all new cables also - it originally came on, went off and now will not come on again. This time it displayed No Input Signal - check video cables.
I would be so grateful if anyone has any ideas.