Windows 7 Keyboard Malfunction?

Jul 16, 2012

I received an update to windows 7 on my hp PC. One of the updates was for nvidia software, however I noticed that after this update that when watching video on full screen that the image was much brighter more contrasty and sharper, so I fouterd (fiddled)about with the various nvidia menus to no avail. I eventually decided stuff this I'll just do a system restore and that should sort it. The only good bit was that my full screen mode was back to normal; but the first thing that happened was that when I went to type my password I couldn't type using the keyboard so I had to use the easy access on screen keyboard using my mouse. Even with windows up and running the keyboard simply won't function, in desperation I tried a couple more restore points and none them worked. I used the F8 KEY with keyboard to get into safe mode and this worked but as soon as the password is needed the keyboard does not work and even in safe mode it's not there.but the keyboard obviously functions since I can use it F8 mode; now the latest thing is that any system restore points fail.In F8 mode selection I notice that there is the option of Computer Repair but if I take this route does this mean that all my software will be removed?

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Mainboard : Gigabyte Z68A-D3H-B3
Chipset : Intel Z68
Processor : Intel Core i5 2500K @ 3300 MHz
Physical Memory : 4096 MB (2 x 2048 DDR3-SDRAM )
Video Card : AMD Radeon HD 6900 Series

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