windows\system32\config\system files missing

[niccam]

Hi having problems booting up my computer the history is as follows
First started getting messages files missing try a repair it worked only to the next day and when tried to boot again same message did the fix again but it keeps coming back
When Im in windows it was ok but eventually it started to play up and crashing so I blamed the HD. Took it out and put in another HD and loaded windows OS system Ok for a day or so then the same problem with the message Missing files came back there a lot of this on the net but no can put thier finger on it and they all say a clean format would clear the problem but I did this on a different HD but have the same problem. Can anyone HELP Thank you

[nburg01]

I had exactly the same problem once, the instructions on this link cured it.

http://support.microsoft.com/kb/307545

[Singh400]

You've got a corrupt registry. Follow the instruction in the above link to fix it. Personally, I would just format and clean install.

[niccam]

Thanks nburg01 and Singh400 no joy as after the welcome screen I can only type 1 letter and then nothing if I hit enter I get a new line but can only type again 1 letter so have give up. After about 5 turn offs windows does start up and I can get into my files, if I turn it off I can still reboot no problems Its when I turn it on again the next day I have go through turning off and on to get windows to boot? As for a clean install this is what I did on a different HD when I first came across this problem but I have the same problem on 2 different HDs?
any thoughts on that

[niccam]

Please Please Please can someone point me in the right direction on this problem
I Tried with a used HD with some info on it which I didn't need and did a clean install went through the full procedure and eveything went well and now have just windows on it added some programs which I wanted and turn it off a few times everything OK. Turn on the next day and though and behold I'm back to square one FILES MISSING DO A REPAIR. It must be something a bit deeper maybe to do with BIOS? Can anyone help THANK YOU

Update: I ran sfc /scannow and it started to look for an older version of WinXP other than the one I have installed with the clean install. How do I clean the HD COMPLETE to install this newer version Thank You