My wife runs her own bookkeeping business, and her laptop is on Windows 7. She knows Win7 is losing support (if it hasn't already) and wants to upgrade to Win10. Can an upgrade in place be done and keep her applications and stuff installed, and also keep her data? Her laptop is about 4 years old I think - it's an HP ProBook 440 G2 w/4GB RAM which is probably low for Win10. EDIT: if it's possible to upgrade, which MS package should be purchased?