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Message: <blockquote data-quote="Bigspin" data-source="post: 936057" data-attributes="member: 32862">I give up driver level overclocking and decide do BIOS level overclock using VGA BIOS Flash .My Guide will show you how to modify your Nvidia video card BIOS and flashing it. This guide also tells you how to backup/restore your original BIOS .YOU WILL NEED FOLLOWING THINGS TO FLASH YOUR VGA BIOS1. USB Flash Drive2. HP Bootable Flash Disk Maker or any software that can make bootable flash Drive 2. Rivatuner or ATITool(To do a driver level overclock before the BIOS Flash)4. NiBiTor(To change bios values)5. NVflash utility (To Backup/Flash your Nvidia VGA BIOS)THINGS YOU NEED TO DO BEFORE THE BIOS FLASH# Clean Install stable driver(I recommend Modded 158.45)# Install RivaTuner or ATITool# Do driver level overclock using RivaTuner or ATITool    # After set overclocking levels as you wish using Rivatuner or ATITool : Test them to make sure card is stable.      Run 3DMark06 Tests.Repeat each test 16 times or more(select SM 2.0 & Sm 3.0 tests only)         Additionally you can try some GPU power hungry games (Eg:FEAR /SCDA/COD2)# 3DMark06 tests are very important!!! please do it.# Remember to monitor your VGA temperature while you are running 3DMark06 tests.# FLASH YOUR VGA BIOS ONLY If 3DMark06 works perfectly. # Lower your clock speeds if you got BSODs /ERRORs or ARTEFACTSHOW TO BACKUP ORIGINAL VGA BIOS# First make bootable Flash Drive and insert(copy) Nvflash files into it# Restart your system and Set computer to boot from USB Flash Drive in BIOS# After the system boot from USB Flash Drive   Type "nvflash[space]-b[space]OLDBIOS.ROM (Eg= a:nvflash -b OLDBIOS.ROM)# Press enter keyThat command will save your original VGA bios  on USB Flash Drive as a OLDBIOS.ROM   You can use that copy to flash back to original state if something goes wrong.# Done. press ctrl+Alt+Del and restart your system into WindowsHOW TO MODIFY YOUR ORIGINAL VGA BIOS# Copy your original VGA BIOS into Nibitor folder from USB Flash Drive         (Do not cut & paste .You need to keep original VGA BIOS copy on your Flash Drive until you successfully flash your card)# Run NiBiTor and open OLDBIOS.ROM from it# Modify 3D values(Core/Shader/Memory) # Make sure to enter tested values using driver level overclock.# Do not forget to reset all the driver level overclock settings to stock values # GeForce 7xxx card owners can forget shader clock modify part# You can Modify Voltage values(Strongly recommended only for Desktop VGA cards) # Save modified VGA BIOS copy as a NEWBIOS.ROM<img src="http://farm2.static.flickr.com/1220/1444628483_ae2e2785bb_o.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />HOW TO FLASH YOUR ORIGINAL VGA BIOS # Copy NEWBIOS.ROM into bootable Pen Drive# Make sure OLDBIOS.ROM and NEWBIOS.ROM both copies available on your Flash Drive # Restart your system and Set computer to boot from USB Flash Drive in BIOS# After the system boot from USB Flash Drive            Type "nvflash[space]NEWBIOS.ROM          (Eg= a:nvflash NEWBIOS.ROM)# Press Enter key                  That command will flash your VGA BIOS and press "y" key or press Enter key when program ask your         confirmation # Done.press ctrl+Alt+Del and restart your system into WindowsFIRST THING YOU NEED TO DO AFTER THE SUCCESSFUL VGA BIOS FLASH# Run 3DMark06 tests again and repeat 16 times or more to make sure your VGA is stable after the BIOS flash.WHAT YOU CAN DO IF VGA CARD IS UNSTABLE OR IF YOU GOT BSOD (BLANK DEAD SCREEN) AFTER THE BIOS FLASHFOLLOW THESE STEPS IF YOUR VGA BEHAVES STRANGELY            Your Simple solution is restore your original VGA BIOS again or Modify your     3D clocks  to lower values .# Restart your system and Set computer to boot from USB Pen Drive in BIOS# After the system boot from USB Flash Drive            Type "nvflash[space]OLDBIOS.ROM          (Eg:a: nvflash OLDBIOS.ROM)# Press Enter key        That command will flash your VGA BIOS to it's original state and Press "y" key or press Enter key          when program ask your confirmation # Done.press ctrl+Alt+Del and restart your system into WindowsFOLLOW THEASE STEPS IF GOT BLANK (Dead Screen) AFTER THE VGA BIOS FLASH         Your only available option is boot blindly from the Flash Drive (That's why I told you to Set computer to boot from USB Flash Drive in BIOS)# After the system boot from USB Flash Drive (Oh...sorry you can't see anything...so wait 1-2 min after you restart your system blindly)           Type "nvflash[space]OLDBIOS.ROM blindly         (Eg:a: nvflash OLDBIOS.ROM)# Wait 2-3 second and Press Enter key blindly         That command will flash your VGA BIOS to it's original state and Press "y" key or press Enter key # wait 10-20  second # Done.press ctrl+Alt+Del and restart your system into Windows##########################################################################</blockquote>

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