Hiya Guys & Girls! I am having serious problems & its driving me nuts. I have recently installed a wireless network card in my pc, before that my computer worked fine, & it worked ok even with this for a while, then suddenly one day i turned my computer off as normal & it since then it has never turned on... I have a power supply where my monitor plugs directly into it, & the monitor light indication lights up, but the base unit wont turn on. I have changed the power supply as it needed a better one anyway but this doesnt make any difference, I have also looked at the CPU(Whic is a AMD 2400 xp Processor) & there was no change in colouration, as the CPU could be a reason for it not starting. I am so confused why it wont start... What can I do next, I have checked that the cables are ok & fitted correctly, removed the cards that were in the pci slots and tried, still no luck... What can I do, it may be the switch but I dont know how to test if it is faulty. Can anyone help, I need my PC back Thanks Kieran Kenny