Please post back a screenshot of your maximized Disk Management drive map and listings:
1. Type Disk Management in Start
2. Open Disk Mgmt. window and maximize it.
3. Type Snipping Tool in Start Search box.
4. Open Snipping Tool, choose Rectangular Snip, click New, draw a box around full drive map and all listings.
5, Save Snip, attach using paper clip in Reply Box.
Tell us what is on each partition.
As you have HP, have you gotten the Clean Reinstall - Factory OEM Windows 7?
If not I would strongly consider it since HP has the worst load of preinstalled crapware of any brand which no tech enthuiasts would impose on Windows 7. At least Clean Up Factory Bloatware
Further, one of the worst problems we see here is MucAfee. I would immediately uninstall it to replace with lean mean Microsoft Security Essentials
and keep the Windows 7 firewall and all other Important and optional Windows Updates current.