I don' know how the Recovery tree looks from the boot disk, never having to restore from a DVD. However, I just checked, your recovery screen shows the complete tree, optical drives. card slots if any and an USB memory stick. I presume all these could be the source for the recovery. Hope this helps.
1. Dimension C521; Athlon64x2; 3.25 GHz RAM; 320GB HD; 256MB Radeon X 1300 PRO ; Windows 7 PRO - 32 bit; Windows Security Essentials; Firefox v3; MS Live Mail; MalwareBytes Antimalware.
2. Studio XPS 7100;Studio Phenom II X61055T 2.8GHz;8 GB RAM;Radeon HD 5450;1 TB HD;Windows 7 PRO- 64 bit; Windows Security Essentials;Malwarebytes Antimalware; MS LIve Mail; Firefox v4; Acronis True Image 2011, RollBack.