I have a Phenom II x6 processor on MSI 785G-E53 motherboard with Windows7x64 OS.  The system does not recognize wth proper processor.  Instead it shows the processor as "AMD Processor model unkown 802 MHz".

This is preventing me from upgrading to Windows8.

How can I get the system to recognize the proper processor model?

Update the BIOS to version 3.B

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Crosshair IV Formula, Phenom II x4 965 w/ Corsair H60, 8 GiB OCZ Platinum DDR3 1600, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64

update both bios and motherbord chipset drivers

keep in mind that your windows may become faulty if you update bios

 

 

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Pics of my rig
FX-8350 @ stock, custom water cooling, 8Gig Corsair Dom 2133 9-11-10-27, Asus CH V Formula, SilverStone ST-1500 PSU, Auzentech X-Fi Prelude, Logitech Z-5500D , 1 x Water Cooled HIS 7970, Asus VW246H Monitor, Win 7 64Bit HP, Corsair 800D Case

Had to think about that one for a second.

How does it alter windows ?

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Gaming Rig
Gigabyte GA-P67A-UD7-B3 F7 bios
i7- 2600k ,Cooler Master V6GT
2x4 gig G-Skill Ripjaws X DDR3 1333
Asus GTX 680
Corsair TX 850W PSU
Creative X-FI Titanium Champion, Logitech Z-5500
Win 7 x64 Ultimate(SP1), Antec DF-85 case.

in some cases changes the boot sector in HDD

I've been updating BIOS's since Socket A (before then they really didn't need updating like they do now) and the only problem I've ever run into was forgetting to change IDE to AHCI

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Crosshair IV Formula, Phenom II x4 965 w/ Corsair H60, 8 GiB OCZ Platinum DDR3 1600, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64

Don't know where you got this idea from, but i personally in the last 25 yrs have never had it happen to me.

I think you are confused with hard drive boot sequence which usually resets when you default BIOS after flashing it to a new/different version.

 

Yep, been there too.. 

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Pics of my rig
FX-8350 @ stock, custom water cooling, 8Gig Corsair Dom 2133 9-11-10-27, Asus CH V Formula, SilverStone ST-1500 PSU, Auzentech X-Fi Prelude, Logitech Z-5500D , 1 x Water Cooled HIS 7970, Asus VW246H Monitor, Win 7 64Bit HP, Corsair 800D Case

i figured out how to get xp to like my box, i put back the odld zip drive and made it A: and xp's f6 liked it so I could install the driver

unfortunately the BIOS cannot make 1 channel IDE, another SATA and another SAS etc

that would solve a few issues I have to face with my collection of games

 

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Corsair Carbide 300R, Asus M5A99FX PRO R2.0, Phenom II 965 C3 BE, G.SKILL RipjawsX DDR3-2133 8 GB, GTX 260 SLI, Asus PA238QR, TX850V2, Windows 7 x64 Enterprise

Asus M4A77D, Athlon64 X2 4200+, DDR2-800 6 GB, HD 5450, cheap 450W, Server 2012