Good friend of mine's having issue.
He was trying to do a clean install of Windows but upon trying to press the famous 'any' key, he found his keyboard along with all of his other USB devices didn't have any power through it and so wasn't responding. However, they'd be fine again once Windows had started.
Not fully understanding the problem at the time I recommended a quick CMOS reset... but now his monitor won't respond and it stays on standby all the time.
Any ideas?