But here are a couple of tricks to make the recovery from insanity quicker and much less painful:
Clearing the CMOS/BIOS (Restoring the BIOS settings to factory defaults and a neat trick)
Please check your manual for the procedure for Clearing the CMOS, pgs. 29 and 30 of the DS3/S3 manual I have, and usually in the Troubleshooting section. pg 82. also. OK, look on your board and find the jumper pins for clearing the CMOS. Now in your manual find the diagram that shows where the front panel switches and LEDs connect to the motherboard (pg 25) and take note of where the reset switch is plugged into the motherboard header, on current versions its on the bottom, closest to the edge of the board and the one to the right toward the front of the board. Yank it off ! Now connect it to the CLR_CMOS pins ! Huh ? Yep, we do not need reset, the computer tries to do that on its own and hitting reset from the front panel is hecka lot easier than messing with the battery etc. We will put it back when play time is over, although I do not have a good reason why we should even bother. So now, to clear the CMOS, just hold in the reset button and count to 10. This works great on my DQ6, as I mentioned I do not have a DS-3 but there is no reason it should not work.
Saving Our Baseline BIOS Settings
Using Q-Flash to Save our Initial BIOS Setup
Read page 60 of the manual concerning Q-Flash, it will work with a floppy or USB drive formated with FAT32. I will talk about using a floppy, you do what you have to do. Find a new floppy, do a full format, if anything weird shows up, trash it and try another, and reboot, tapping the "End" key to get into Q-Flash immediately or "Del" to go into the BIOS main menu and then hit the "F8" key. From the menu select "Save BIOS to Drive" and when prompted give the file a name like baseline.f10 or overclock.f10. Please add the .XYY of the bios version just like the original BIOS file from Gigabyte so if you tell them apart if accumulate a lot of them. Since they are 1MB in size you can only get one BIOS file on a floppy. OK so now if everything goes south we can get back to our baseline. I have flashed my machine a lot with Q-Flash and a floppy but any BIOS flash is inherently dangerous (My DQ6 has a backup on board, really sweet). So I strongly suggest you take a look at the next section, it makes things sooo much easier.
Using Stored Profiles is the Preferred Method
As there is some risk with the full flash method above, after you make a hard BIOS backup, see if your board supports this feature and use it. It will save a LOT of time. From the main BIOS screen, look at the bottom and see if there is an "F11: Save CMOS to BIOS", if so this is a great thing to use. Go ahead and hit F11, an 8 slot menu should pop up, you use your arrow keys to move up and down. Highlight one of the "Default" entries, and type in "Baseline" or something like that, space over any remaining letters of the "default" if they exist, and hit the enter key to close the menu. From the main BIOS screen hit "Exit and Save Settings", your are done. On reboot hit "del", get into the BIOS and change something easy to find. Now go back to main menu, hit "F12: Load CMOS to BIOS", select the entry you just made with your arrow keys and hit "Enter". Go look at what you changed a minute ago, its back to what it was! Neato. This is great for OC testing, I have a "TEST" profile I use and a "Stable OC" and a "Baseline" profile. This does NOT eliminate the need to write stuff down but you should get comfortable using this. Just every time you make a change, BEFORE "Exit and Save Changes" use F11 and save your stuff to the "TEST" or whatever you named it profile. Tip - don't mess with your "Baseline" profile, ever, make another one. With 8 slots you can figure out a method that works for you.----------- work in progress below here, use at own risk ---- There is nothing horribly wrong or incorrect in the following I have just, not finished, double checked the logical progression and am basically getting a first cut down and it needs to be gone through again simplified and triple checked for errors.
Instant GratificationAs a reward for wading through all this stuff, lets take a minute and "play toys". We are just going to do a "quickie" overclock try to boot and load into windows. As soon as you can get Coretemp fired up in windows and check you temp. If the heatsink is installed correctly you should not be over 55C even with stock heatsink. We have our baseline profile saved, right ? right!.
Find your CPU in the table below on the left and move right until you get to the column that is your memory.
The values listed are CPU clock ratio (multiplier) - Memory Divider - FSB (Host Clock Speed) and at the very end the speed your CPU will be running. For example if you have an E6400 and PC6400 memory set your multiplier to 8, your memory divider to 2.0 and and FSB to 333MHz in the M.I.T menu and after rebooting it should run at about 2.664GHz.
Example using E6400 and PC6400 settings from the table below:
MB Intelligent Tweaker(M.I.T.)Robust Graphics Booster___________ [Auto]
CPU Clock Ratio _________________  <<<----CPU Multiplier from table for E6400 + PC6400
CPU Host Clock Control____________ [Enabled]
CPU Host Frequency (MHz)_________  <<<----FSB Speed (Front Side Buss) from table for E6400 + PC6400
PCI Express Frequency (Mhz)_______ 
C.I.A. 2__________________________ [Disabled]
System Memory Multiplier (SPD)_____ [2.00] <<--- Memory Divider from table for E6400 + PC6400
_________PC2-5300 ____ PC2-6400______ PC2-7200 ____ PC2-8000 ___ PC2-8500___aprox speed
E4300__9 - 2.5 - 266 __ 9 - 3.0 - 266 __ 9 - 3.3 - 266 __ 9 - 3.3 - 266 _9 - 4.0 - 266_2394
E6300__7 - 2.0 - 333 __ 7 - 2.0 - 366 __ 7 - 2.0 - 366 __ 7 - 2.5 - 366 _7 - 2.5 - 366_2664
E6400__8 - 2.0 - 333 __ 8 - 2.0 - 333 __ 8 - 2.5 - 333 __ 8 - 3.0 - 333 _8 - 3.0 - 333_2664
E6600__8 - 2.0 - 333 __ 7 - 2.0 - 400 __ 7 - 2.0 - 400 __ 7 - 2.5 - 400 _7 - 2.5 - 400_2800
E6700__9 - 2.0 - 333 __ 8 - 2.0 - 375 __ 8 - 2.0 - 375 __ 8 - 2.5 - 375 _9 - 2.5 - 375_2997
X6800__10 - 2.0 - 333 __ 8 - 2.0 - 400 __ 8 - 2.0 - 400 _ 8 - 2.5 - 400 _8 - 2.5 - 400_3200
Q6600__8 - 2.0 - 333 __ 7 - 2.0 - 400 __ 7 - 2.0 - 400 __ 7 - 2.5 - 400 _7 - 2.5- 400_2800
QX6700__9 - 2.0 - 333 __ 9 - 2.0 - 375 __ 9 - 2.0 - 375 _ 9 - 2.5 - 375 _9 - 2.5- 375_2997
Back out ot the main menu, F11- Save it in a new profile, Save and Exit and a short prayer during the power cycle and reboot cant hurt.
With a little luck you should now be running with a mild overclock. Grab your notebook and jot down the results of the following. Start cpu-z and record your CPU speed and FSB, Start coretemp and check your temps both at idle and with Orthos running for a couple of minutes. If under load you are at or over 65C shut it down. Click on the "memory" tab of cpu-z and jot down the information, it should correspond to the manufactures timings we manually placed into the BIOS settings. If your temps are good, play around some. Come back when you feel like it, I will go take a nap. No hurry.