Hi everyone please offer some help or advice here, I for my sins am the owner of a Dell XPS 720 that recently refused to boot and a clicking noise from the PSU I found that it had a 750w PSU and was advised to upgrade to 1kw which I have done and find that even the new 1kw PSU clicked like the old one by which time I gave it to a computer repair firm who are now telling me the fault is from the motherboard and Dell want £300.00 for a refurbed one has anyone got a known good motherboard or a sensible alternative as I am up to my neck and sinking fast please offer me a reasonable alternative someone, also while looking on the Bay of E I found a motherboard supposedly for a XPS 720 but it was red and mine was green also mine had 4 memory ram slots and the red one looks like it only has 2 and as I have 8gb of ram 4 x 2gb I have a feeling I am heading for trouble someone throw me a lifeline please Chris