HP has released a slew of new PCs — both desktop and notebooks — that leverage its growing investment in touchscreen technology ahead of Microsoft’s Windows 7 release. The products target just about every buying constituency there is, from college students seeking affordable notebooks to businesses interested in upgrading to high-end desktops and laptops. In the touchscreen category, it introduced several new HP TouchSmart PCs for business users and a couple of new entries geared toward consumers.