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#11
It's a friend's laptop, not mine, that is why I haven't changed my System Specs.
BIOS downgrade is impossible at least not through the BIOS interface - that is where I updated it originally. I tried to flash 302 after the update it it tells me it is too old.
As far as I can see the laptop came originally with DOS, at least the sticker on the palm rest says OS: Free DOS.
My friend had Windows 7 on it and one day it stopped working with the error being some files are corrupt or missing. System Repair didn't help, so I decided to reinstall and I've been trying ever since.