Keyboard keys 1, 2, 3,. 0 & shift to get characters above them display wrong characters - the ALL display the same, & it's always the last other key typed... Dell inspiron 530 core 2 quad 6600. What caused this: had vista 32 bit home premium, upgraded to 7 home premium. It takes ONLY usb keyboards - tried 2 diff ones that work perfectly on my 2 other desktops. What's even more weird, go into ease of access center & put onscreen keyboard up, IT WORKS FINE! In addition, I accessed it through team viewer from my laptop, TYPES THE #'s FINE! I'm very knowledgeable with PC's as I refurb for resale - tried re-installing drivers, triple checked language & regional settings... it's pretty obviously not a hardware prob, someone must know the prob here, PLEASE HELP!