My PSU is good and not a bad one I'd say, it's Corsair TX650.
Here's the thing when I use Win7 everything works fine I am able to shut my pc (fans are off) and all is quiet. With Vista home premium (32) I've noticed Sleep and Hibernate options are gone (Start) !
Weird. What's more as I've already mentioned when I click on shut down (start) my CPU fan and PSU are still working. Also my display becomes black but " _ " sign appears and blinks.
I hope there is some way to install Vista ( I really like it), I'd really appreciate your help. I've used my legit DVD so far. Tried swapping HD's , didn't help either.
Idk maybe it's just impossible to have Vista 100% working with that z77. I've noticed Gigabyte offers only 2 drivers for vista - http://www.gigabyte.com/products/product-page.aspx?pid=4144#driver