XP pro hangs on boot

My Dell 4700 running WindowsXPpro is hanging up on booting. If I try to go to Setup of Boot Menu, It shows 'Keyboard Failure'.  The screen remains black with only a flashing cursor for about 5 minutes. The machine then automatically reboots and the same screen shows up. Then after another 5 minutes the machine boots properly.  I looked into the error log and found this:  
Source-Side by Side-  Dependent Assembly Microsoft.VC80.MFCLOC could not be found and Last Error was The referenced assembly is not installed on your system.
And this message as well:
Generate Activation Context failed for C:\WINDOWS\WinSxS\x86_Microsof t.VC80.MFC_1fc8b3b9a1e18e3b_8. 0.50727.42_x-ww_dec6ddd2\MFC80 .DLL. Reference error message: The operation completed successfully. .
I hope this makes sense to you guys. Sorry, but I am not the most computer literalte person...
GardenerbobWAsked:
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nobusCommented:
what keyboard do you use? if ps/2, try an usb one, or vice versa.
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GardenerbobWAuthor Commented:
I tried changing the keyboard, as you suggested, and am now able to get into SetUp. Thanks!!!
Unfortunately, I still have a problem with booting. The darn computer takes about 10-15 minutues to boot. Afterwhich, all seems to be fine. Any solutions out there?
BTW- Moderator, should I award points?
Thanks Bob
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nobusCommented:
>>   The darn computer takes about 10-15 minutues to boot.    <<  and in safe mode?  also so loong ?
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GardenerbobWAuthor Commented:
I just checked out another question(ID-21286785) regarding boot hanging up. The symptoms seem identical to mine. Though in my case, when I updated the Bios, my poblems seem to begin. How can I revert the Bios to a previous settting? (I believe they called it Flashing Bios).
Thanks Again, Bob
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nobusCommented:
by flashing the bios with the old bios file - when you flashed, it should have asked if you want to save the old file - Did you ?
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GardenerbobWAuthor Commented:
Forgive my newbieness...
My Dell Updates told me of a new BIOS being avaliable, so I downloded and installed. I never though to save the old one (nor did I get a prompt, AFAIK).  I do remember that the flash was successful (though I tend to disagree).  Is there any way to find the original version? or should I just live with a slow booting PC?
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nobusCommented:
well - did you note the old settings in the bios? you can check them if they are the same.
You can also look in the bios, to check if the HDD is set first in the boot priority, and boot from LAN is disabled .
Alternatively, you can contact Dell with your problem :
http://support.euro.dell.com/support/index.aspx?c=be&l=nl&s=dhs&cs=bedhs1&~ck=anavml
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GardenerbobWAuthor Commented:
Thanks for the suggestions. I will try them out now.
BTW-your link seems to be in Dutch, not my best language as the Dutch superintendant I worked for didn't want to teach me any Dutch words  : )
Though if You are Dutch, your English is impeccable.
Thanks Bob
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nobusCommented:
>>  Though if You are Dutch, your English is impeccable.   <<  it is, thanks.
if you want support in your language, got to www.dell.com, and select support
  >>  as the Dutch superintendant I worked for didn't want to teach me any Dutch words  : )    <<  life has taught me you have good and bad ones everywhere - that definitely is a bad one . . .
 
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GardenerbobWAuthor Commented:
Well Nobus, I had to call in the Cavelry. I got a computer literate guy to look at my machine.
The problem was that after the BIOS flash, the darn thing kept looking to boot from my external HD's.-Hence, the lock ups. You were really close to solving the problem. Had I looked closer at boot priority, I would have found the cause. I hope the moderators will award you the points.
BTW- how do I close the question?
Thanks again for all your help.
Bob
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nobusCommented:
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