BIOS Dell OptiPlex 990 Dell KATSIKI-USFF

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Dell OptiPlex 990 System BIOS, A19
Schematics Dell OptiPlex 990 - Dell KATSIKI-USFF rA00

 

[ThienBui]

Hi system boot but after 20 seconds speed fan full pls clear optiplex 990 dt

https://vinafix.com/attachments/clsss00-zip.326702/

 

[ct lab]

I have original one 8mb bios, but 2mb bios chip dead. I use bioses from first post. When use only 2mb have problems, freeze on logo, restart, blincking 234 etc. Dont know where to find 2 bioses from e93839 KA0120 precision 1600.