It's best to simply replace the entire Mother Board than try to replace the BIOS. Replacing a Mother Board vs replacing a BIOS is way easier.
Your current BIOS MIGHT work if you can find a flash file for it, but you have to be careful. If the BIOS your flashing isn't in production it's usually only PATCH flash file, to fix a problem with a BIOS, not upgrade it. And if you use the wrong flash file, it will TRASH your BIOS!
The BIOS, which is a chip, is usually micro-soldered to the Mother Board with high precision, by a robotic arm, and not easily removed or duplicated. The exception is if you happen to have a BIOS chip
, that can be replaced, in a socket
, but this is unusual instead of common.
The best source for BIOS info such as you are looking for is the American Megatrends Website
itself at: AMI American Megatrends Inc Aptio
(compatible with Windows 8) however their website is for the Mother Board manufacturer so you can't buy the BIOS as a consumer, but through a reseller, AMI Office, Authorized Representatives, etc (AMI American Megatrends Inc How to Buy
You can however, buy a replacement Mother Board with a BIOS already installed on it (that's the way you usually buy them - with the BIOS pre-installed on the Mother Board) that's PAE, NX, and SSE2 and whatever else you want compatible. A great website to find computer parts and kits, new, refurbished, out of box, etc is the Tiger Direct Website at: TigerDirect com Electronics Tablets Phones Office Supplies Video Games
. Just search for BIOS to find your specs, then check the bottom for possible best Mother Board kits to replace the one you have now. Hope this helps. :-)