craashing

2.63 has been running fine.
today all the faces of things i made over the last few weeks have vanished!
the standard file with a cube is okay.
i tried several of the files i recently made and they are the same.
all i can see is the extrude things that i did not convert to mesh.
can the videocard do this?
i tried the file on another computer and the faces were still gone.
so i tried on the first computer to edit select all F. and it made faces but it keeps crashing after about each one.
i doubt if updating to the current version will fix this.
thanks
PS the menu print is smaller so it looks like the settings have changed in blender
included is a drastically cut down version of the blend file

Attachments

nofaces.blend (987 KB)

OS version? Recent video driver upgrade (otherwise, why would print change)? Any fiddling with user preferences, System tab?
It is always worth to be on latest available Blender version (and keep previous just in case).

win7 64 no recent upgrades or any other alteration to the old computer.
http://h20565.www2.hp.com/portal/site/hpsc/template.PAGE/public/kb/docDisplay?javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken&javax.portlet.prp_ba847bafb2a2d782fcbb0710b053ce01=wsrp-navigationalState%3DdocId%3Demr_na-c01466472-25%7CdocLocale%3D%7CcalledBy%3D&javax.portlet.tpst=ba847bafb2a2d782fcbb0710b053ce01&sp4ts.oid=3733093&ac.admitted=1386345789868.876444892.492883150

win7 64 no recent upgrades or any other alteration to the old computer. thanks
i did convert to win7 64 years ago
NO recnet changes made to anything - if it works … i dont touch it!
this is the computer. graphics card was changed a year ago
http://h20565.www2.hp.com/portal/site/hpsc/template.PAGE/public/kb/docDisplay?javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken&javax.portlet.prp_ba847bafb2a2d782fcbb0710b053ce01=wsrp-navigationalState%3DdocId%3Demr_na-c01466472-25%7CdocLocale%3D%7CcalledBy%3D&javax.portlet.tpst=ba847bafb2a2d782fcbb0710b053ce01&sp4ts.oid=3733093&ac.admitted=1386345789868.876444892.492883150