|Depending on what caused the power failure event and what that event did, if you hadn't had your computer running while you were asleep, you may never have had the problem you were having if the computer was not running at the time. |
People often don't know they're supposed to install the mboard drivers after installing the operating system from scratch - that's why I mentioned it.
Your info is useful to someone else with a similar problem, but.....
- if you re-installed Windows and all the drivers from scratch, rather than just running a Repair install of Windows, which doesn't always fix problems, your problem probably isn't caused by hdaud.sys itself, which wouldn't be corrupted (unless your hard drive has been damaged by the power failure event) - it's probably caused by damage done to the audio hardware/circuits by the power failure event, whether that's on the mboard or on a card in a slot.
There is probably nothing you can do about whatever damage was done to the motherboard, e.g. if you are using onboard audio, other than possibly disabling things that don't work properly.
Run diagnostics on your hard drive.
E.g. Seagate's Seatools will test any brand of hard drive.
Power failure events often damage the power supply.
Check the current readings for +12v, +5v, and +3.3v in the bios to see whether they're within 10% of their nominal values - if any of those aren't , replace the PS.
By the way, the minimum recommended PS capacity for a system with a Radeon 4670 video chipset is 400 watts, and, more important, that puts out a minimum 26A @ +12v, or more - if the PS has more than one +12v output, add them.
If you're a gamer...
In most if not all cases, the max capacity rating of the PS is an intermittent rating. It's recommended that you do not load your PS to any more that 80% of that rating if you are going to be using something that puts a constant load on it, such as playing a recent game for hours on end. In that case, you multiply the min capacity stated for the system with the particular video chipset on the card by 1.25 to find the min. capacity of the PS you should get.
In this case, 400 x 1.25 = a minimum 500 watt PS.