It's logical but can go wrong:
Flashing you bios is not done through windows and you need to make sure you have the following sorted.
1) Test the battery on your motherboard. You can safely remove it for up to 30 minutes (plenty of time) before the BIOS starts to lose memory. Most batteries should be 3V or slightly more when new. An old battery might only be 2.4v or less. If you try flashing with a weak battery the chances of failure go up. BTW I bought a CR2032 battery for my Mobo from MAPLIN (own brand) for £1.92, but it only had 2.9v new. I then bought a Duracell CR2032 for £3.99 which had 3.4v Itwas twice the price, but a battery is one thing you have to be sure of imho (in my humble opinion).
2) Find out the make and issue number of your MoBo. This should be in writing on it somewhere. Mine is between to of the RAM slots. )In my case it's Asus A7N8X Deluxe 1.04) You need this iformation to get the right BIOS. Without it you can't flash. You should have a MoBo Manual that should tell you where to look, if needs be Ring Time Technical Support and find out.
3) On YOur BIOS Chip there might be a sticker telling you the number of the current BIOS. Make a note of it.
4) it apeears you have Award BIOS. Award have a flash program (2 actually) that make flashing easier. Can you confirm this?
5) When you start your PC do you get the following msgs at the bottom of your screen:
To Enter Set-Up press Del?
To Enter AWD Flash press Alt+F2?
If you have the 2nd you're lucky as flashing just got a whole lot easier.