Windows 7: HD crash, no recovery disc, have product code. Do I have to have disc

OS win7 32

Computer type PC/Desktop
System Manufacturer/Model Number Built them myself, Science Experiments !
OS Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)
CPU AMD fx8350 4ghz, AMD-32 2400mhz, AMD-64 3200mhz, AMDx64 2.8G
Motherboard SIS 755, ECS-K8M890M-M (Ult 7600), GigaByte & others
Memory 2gb, 4gb on the Ult 7600, 4gb on Technet RTM, 32gb on FX8350
Graphics Card Draw my own Graphics, several nVidia cards
Sound Card on motherboard
Monitor(s) Displays 19" flat scr, 28" I-Inc widescr,22" Emprex Widescr, 23" Acer
Screen Resolution 1280 x 1024, 1440 x 900, 1920 x 1080

Keyboard Compaq & Dell recycled from GoodWill
Mouse Made in China Optical Wired Mouse
PSU 430w, 550w, 600w, 700, 800, etc
Case All Generic Full Towers
Cooling Open Air & a few fans, some w/ colored LEDs
Hard Drives 6 pata Ide HD's & 2 Sata HD's added 80gb external on Ult 7600 computer, numerous extra 1tb, 2TB, 3Tb SATA HD's A collection of ext HD Docks w/ HDs
Internet Speed Fast Cable InterNet
Antivirus AVG Free on 24 different Desktops, NO Problems!
Browser IE 8 is preferred, but use FireFox sometimes
Other Info Linksys Routers, switches, & Hubs Too Many USB Flash Drives to count, Biggest is 64GB ! Eight computers in my home network. Sixteen computers at my business network. Linked via TeamViewer ! Lots of old used spare computer parts everywhere!

OS win7 32

System Manufacturer/Model Number Ignatz Special; 4 speed manual gearbox; factory air conditioning; one of one
OS Windows 7 SP1, Home Premium, 64-bit
CPU Intel Sandy Bridge i5-2500, not overclocked
Motherboard Gigabyte H67A-UD3H-B3, full ATX
Memory 4 GB Crucial DDR3-1333
Graphics Card none; graphics are integrated on CPU
Sound Card onboard: Realtek ALC892; external: USB Behringer UF0-202
Monitor(s) Displays NEC 90GX2-BK 19" LCD
Screen Resolution 800 x 640

Keyboard Leopold Tenkeyless with Cherry Blue switches, USB
Mouse Logitech or Microsoft optical wired; either USB or PS 2
PSU Seasonic SS-560KM, modular
Case Antec Solo II
Cooling CPU: Scythe Big Shuriken; Case: Scythe Slipstream 800 & 500
Hard Drives System: Intel 320 Series SSD, 80 GB; Data: Samsung Spinpoint 103SJ, 1 TB; Backup: WD Caviar Green WD15EADS-00P8B0, 1.5TB
Other Info Power consumption of this system, including monitor: 68 watts at idle; 144 watts at full load

Computer type PC/Desktop
System Manufacturer/Model Number Built them myself, Science Experiments !
OS Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)
CPU AMD fx8350 4ghz, AMD-32 2400mhz, AMD-64 3200mhz, AMDx64 2.8G
Motherboard SIS 755, ECS-K8M890M-M (Ult 7600), GigaByte & others
Memory 2gb, 4gb on the Ult 7600, 4gb on Technet RTM, 32gb on FX8350
Graphics Card Draw my own Graphics, several nVidia cards
Sound Card on motherboard
Monitor(s) Displays 19" flat scr, 28" I-Inc widescr,22" Emprex Widescr, 23" Acer
Screen Resolution 1280 x 1024, 1440 x 900, 1920 x 1080

Keyboard Compaq & Dell recycled from GoodWill
Mouse Made in China Optical Wired Mouse
PSU 430w, 550w, 600w, 700, 800, etc
Case All Generic Full Towers
Cooling Open Air & a few fans, some w/ colored LEDs
Hard Drives 6 pata Ide HD's & 2 Sata HD's added 80gb external on Ult 7600 computer, numerous extra 1tb, 2TB, 3Tb SATA HD's A collection of ext HD Docks w/ HDs
Internet Speed Fast Cable InterNet
Antivirus AVG Free on 24 different Desktops, NO Problems!
Browser IE 8 is preferred, but use FireFox sometimes
Other Info Linksys Routers, switches, & Hubs Too Many USB Flash Drives to count, Biggest is 64GB ! Eight computers in my home network. Sixteen computers at my business network. Linked via TeamViewer ! Lots of old used spare computer parts everywhere!

OS win7 32

OS Win7 x 6 PC's