Window font/sizing issue

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I have a customer who likes registry fix tools. We regularly have to fix the problems that these programs create for him. Last visit he had used seven of them one after the other, and then his machine wouldnt reboot. Ive been through this with him several times, but he insists on trying virtually every program that comes free with PC magazines, or has a free trial on line.
Anyway, once it rebooted, and we had reinstalled several programs, all seemed well.
Except. When in certain printing related Windows, only the top left quarter of the information shows. This is in the Printing Preferences window. The font is all wrong as well. On closer inspection, MS Sans Serif is corrupted (SSERIFE). When the font is viewed from the fonts folder, the header shows as Arial (open type).
I have tried everything I know to delete and reimport the font, but italways comes back corrupt after a reboot. I am assuming the two problems are related.
Anyone have any ideas how to fix this short of a repair installation?

[NooNoo]

There is a system font you might want to replace, I can't remember what it's called off the top of my head. Will have a dig for it in a bit.

[ADS_Tech]

Thanks NooNoo.

[NooNoo]

http://support.microsoft.com/kb/823033/en-me

But... registry keys
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts]
gives the installed fonts

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontSubstitutes]
"Arial CE,238"="Arial,238"
"Arial CYR,204"="Arial,204"
"Arial Greek,161"="Arial,161"
"Arial TUR,162"="Arial,162"
"Courier New CE,238"="Courier New,238"
"Courier New CYR,204"="Courier New,204"
"Courier New Greek,161"="Courier New,161"
"Courier New TUR,162"="Courier New,162"
"Helv"="MS Sans Serif"
"Helvetica"="Arial"
"MS Shell Dlg 2"="Tahoma"
"Times"="Times New Roman"
"Times New Roman CE,238"="Times New Roman,238"
"Times New Roman CYR,204"="Times New Roman,204"
"Times New Roman Greek,161"="Times New Roman,161"
"Times New Roman TUR,162"="Times New Roman,162"
"Tms Rmn"="MS Serif"
"Arial Baltic,186"="Arial,186"
"Courier New Baltic,186"="Courier New,186"
"Times New Roman Baltic,186"="Times New Roman,186"
"MS Shell Dlg"="Microsoft Sans Serif"

and

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontMapper]
"ARIAL"=dword:00000000
"COURIER"=dword:00008800
"COURIER NEW"=dword:00008000
"FIXEDSYS"=dword:00009000
"MS SANS SERIF"=dword:00001000
"MS SERIF"=dword:00005000
"SMALL FONTS"=dword:00000800
"SYMBOL"=dword:00004002
"SYMBOL1"=dword:0000a002
"TIMES NEW ROMAN"=dword:00004000
"WINGDINGS"=dword:00000002
"WINGDINGS2"=dword:00008002
"DEFAULT"=dword:00000000

probably need fixing.

[ADS_Tech]

Went through every entry one at a time. All matched correctly . Any ideas?

[CCT]

http://support.microsoft.com/kb/314960

edit: apparently sfc /scannow ALSO repairs damaged/missing System Fonts

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http://support.microsoft.com/kb/314960

Thanks, but tried that. Comes back corrupt after the reboot.

[CCT]

Pls see my edit above

[ADS_Tech]

Pls see my edit above

I think we tried that, but theres no harm in trying again just in case. I'll take a look tomorrow.