As I have spent some time resolving the problem, I’ve decided to share the solution with you.
I have bought my MSI Wind as soon as they were available in Poland, in July last year. It was quite some time ago, so I decided to update BIOS. I downloaded it from MSI official page, prepared bootable pendrive using HP USB Storage Disk Format Tool (downloadable from here) and Windows 98 boot files from my own archives (you can find some boot disk images at bootdisk.com). After extracting BIOS files to the pendrive, I’ve booted system from it.
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