As you seem to know your PSUs Danny Bui, I replaced it with an Antec New Truepower 650W - do you know anything about them? Reviews I read looked better than my other options.
Tried the guide - gave up in the end and got a new PSU this morning.
Touch wood, everything is looks good. The PC is coming through problems (quick waking after sleep) it used to have and booting up OK.
Got the PC to boot yesterday and ran Prime95 stress test Kalster, PC successfully completed all the tests! Still failed when I did the sleep -> quick wake test, and then wouldn't boot - as per usual.
Danny Bui - unfortunately there's no other PSU I have to hand, only got notebooks in the...
After 18 months of being absolutely fine, I've been having increasing trouble with my PC not waking from sleep or getting it to even POST (let alone boot!) from shut down.
Now, if I try to wake up the PC from sleep within 2 minutes of putting it to sleep, it will fail to wake properly 100%...