For the systems most critical to your business, HP commits to resolve hardware problems within six hours when you purchase HP 6-Hour Call-to-Repair Hardware Support. When you call the HP Global Support Center – any time, 24x7x365 – a technician uses remote tools to isolate the problem. If it can’t be resolved remotely, he or she dispatches a support professional to your site to ensure the repair is completed within 6 hours.