Hello, thank you so much.
Now, the keyboard is:
Microsoft USB Dual Receiver Wireless Keyboard (Intelli Type Pro)
The mouse is:
Microsoft USB Dual Receiver Wireless Mouse (Intelli Point)
I don't know if their drives need updating(or if the updating happens automatically somehow) - but I haven't updated them since I bought them (together with the computer)- almost 4 yeas ago. .
When I did the clean re-installation of Windows about 7-8 months ago, I probably had to update all my drives, but I didn't, because I was not sure how to do it.
When Windows' starting process reaches the stage when I have to enter user's password(after the cursor shows up on the screen) - the wireless keyboard works OK, but not before that.
As I tried to explain in the first post, that is what happens:
1. I turn on the computer, it goes OK and when the start up procedure reaches Windows' screen (with Windows logo in the middle of the screen)everything stops - I get a black screen and the light next to the re-start button goes off; or I would rather say - it is the other way around - the light goes off and the screen becomes blank.(I noticed, that in the rare occasions when Windows somehow succeeds to load normally this light does not go off - but continues blinking)
2. I press the re-start button and everything starts from the beginning again, only this time the system goes through the recovery screen (because the computer was not shut down properly) and now I can choose a recovery mode(safe, normal etc.). I don't make any choice because the keyboard doesn't work and just wait another 28 seconds for the computer to start again in normal mode. And it starts Ok.
So, I always do that, every day, every time I want to turn on the computer I go through this - start button - it stops - re-start button, wait 28 secs and Bingo! As I said, several times a month Windows loads OK for my infinite surprise. And rarely again, pressing once the re-start button does not help - I go again to a black screen, and press it again and again and again - sometimes up to 9 times and finally it starts.
So, from the moment I have to enter the password - on, I have no problems with the keyboard.
I am telling you all this, because what happens with the (wireless) keyboard, could be part of the problem.
I wanted to mention as well, that about 10 days ago I purchased RegSERVO Premium, in the hope that it can help me solve my problems.(and because I read that it was recommended by Microsoft-is it?). I don't know if running their 'scans' and 'fixing errors' options caused the computer to give me the Disk read error message and now it can't start at all.
Edited by pomognetemi, 25 October 2013 - 12:55 PM.