No display when PC turns on. No POST beeps but all fans

[account_disabled]

I've had my PC for a year. It wouldn't wake up from sleep the other day - just a black screen. So I tried holding the power button. It wouldn't shut off. I had to use the power button on the back of the PSU. Now when I turn on the PC, I get no display, and no POST beeps (made sure the internal speaker was plugged in), but all of the fans work. The drives are spinning up just fine too. I still can't shut it off with the case button no matter how long I hold it in...which seems a little strange?

Any idea?

Please help.

Thanks!

I didn't find the right solution from the Internet.

References www.sevenforums.com/general-discussion/299788-no-display-when-pc-turns-no-post-beeps-but-all-fans-drives-run.html

Animated sales video