Yes/No answer in commands problem

I use Windows 98. Lately something changed and I have problems with commands which ask Yes/No question, like del command or like fdisk. They stopped to accept Yes, the only possibility is to answer No. How to correct that behaviour?
Thank you.
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It sounds like you're having a keyboard problem.

Boot the PC to a bootable dos disk and at the dos prompt, run some tests on the keys by typing each letter in upper and lower case.

When you're done, use the dos editor ( and run through additional key tests, including the insert, DEL and other keys.

Let me know what you find.

You may also want to check the Bios settings for the motherboard to make sure nothing has changed.
shrlduAuthor Commented:
I think I can now be more specific on the problem. Well, I use Windows 98 English Edition. Lately I installed a Microsoft patch (from CD disk Microsoft sent to his clients). It was Microsoft Resources for year 2000 or something like that. It was a Polish edition but nothing suggested it can cause any problems (the message was that it could check out the proper version). Now I have English-Polish Windows in that sense that the message is in English (question Yes/No), but I have to answer in Polish. The coincidence is that the answer in Polish is Tak/Nie, so the second answer works and the first no <G>. Now I understand the situation, but I do not like it. Can I correct this in some way? Thank you.
Yes you can, but you're probably not going to like it either way. There's three possibilities.

1. Try and determine if this update can be uninstalled. If not, then go to #2.

2. You may be able to restore a registry that precedes the date of this installed update. You'll nee to determine exactly to the day when it was applied though.

3. And the least desirable would be to format and reinstall after saving off important data. Loading Win98 over top of the existing install won't fix this.

NOTE: You may also want to go into control panel and the keyboard settings and see if you can reset it there though, but this is a guess at best.

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