PC will not switch on

I have a millienium music audio pc, the last time i switched it on I got a grey screen up with big bold letters and options I assume it was BIOS looking back.
I restarted the Pc as I am shy of computers, the pc worked fine and i did my work as usual.
I went to switch it on today and nothing. When the lead is in and the power switch at the reverse is on the motherboard led is lit.

I took advice from a friend to switch it off remove all leads then power back up, also to hold power button for 10 seconds and remove the watch battery like object in the mother board I assume is for bios re set, still no results have even tried different cables.

Please could you help me diagnose it?

Rob

 

anyone?

 

It might take awhile until someone with the right tech skills gets to you, be patient everyone here are volunteers and not always on.

 

thats cool mate! my hunches are it either needs the watch battery for bios or new psu