Let's get it sorted do the below.. please understand this will not make windows genuine it will only let you update microsoft windows.

open notepad .. Paste the following lines of text in to it.
Here goes the text :

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\WPAEvents]
"OOBETimer"=hex:ff,d5,71,d6,8b,6a,8d,6f,d5,33,93,f d
"LastWPAEventLogged"=hex:d5,07,05,00,06,00,07,00,0 f,00,38,00,24,00,fd,02

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion]
"CurrentBuild"="1.511.1 () (Obsolete data - do not use)"
"InstallDate"=dword:427cdd95
"ProductId"="69831-640-1780577-45389"
"DigitalProductId"=hex:a4,00,00,00,03,00,00,00,36, 39,38,33,31,2d,36,34,30,2d,\
31,37,38,30,35,37,37,2d,34,35,33,38,39,00,5a,00,00 ,00,41,32,32,2d,30,30,30,\
30,31,00,00,00,00,00,00,00,00,0d,04,89,b2,15,1b,c4 ,ee,62,4f,e6,64,6f,01,00,\
00,00,00,00,27,ed,85,43,a2,20,01,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,31,34,35,30,34,00 ,00,00,00,00,00,00,ce,0e,\
00,00,12,42,15,a0,00,08,00,00,87,01,00,00,00,00,00 ,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 ,94,a2,b3,ac
"LicenseInfo"=hex:9e,bf,09,d0,3a,76,a5,27,bb,f2,da ,88,58,ce,58,e9,05,6b,0b,82,\
c3,74,ab,42,0d,fb,ee,c3,ea,57,d0,9d,67,a5,3d,6e,42 ,0d,60,c0,1a,70,24,46,16,\
0a,0a,ce,0d,b8,27,4a,46,53,f3,17


choose File->save as->"Add Licence To Your Windows.reg"-> ok.
u can use any name with .reg extension . Double click the file u saved.
u will be asked for the confirmation to add the information in the file to
your windows.reg in the registry . click ok.

And now u can download and
install softwares from microsoft to ur computer