How do i format my pc a 100% without leaving any trace behind??

With all due respect, I strongly advise against following the advice of the two posts directly preceding me.

Trustworthy software-based solutions documented and recommended by trustworthy authors have been posted already in the first two posts. Beyond that, I have already mentioned that physical destruction of the HDD is the only proper answer remaining if a software-based solution is not satisfactory.
 

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Just sell it without the hard drive, problem solved :)

I mean, if you are truly worried about it.
 

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I have already mentioned that physical destruction of the HDD is the only proper answer remaining if a software-based solution is not satisfactory.

Just sell it without the hard drive, problem solved :)

I mean, if you are truly worried about it.

I agree with these, if you are that concerned over data on a storage device being recovered and don't feel software will provide you with enough trust then don't sell it etc and just destroy the drive.

Regards,
Jamie
 

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Have we lost realmadrid25?

I would like to know the final decision on what method is used.
 

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Intel i7-6800K @ 4.3
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What are we talking about here? Why would you need to destroy all traces of data to where only sophisticated police forensics could retrieve it? If you have only the normal worries about bank and other personal data, then there is no reason you can't run Factory Recovery to hand the new owner the PC as it came from factory, or format to do a Clean Reinstall, adding at most http://www.sevenforums.com/tutorials/52129-disk-clean-clean-all-diskpart-command.html.

There is almost zero chance data could be recovered from either of those options. I've never been able to retrieve any readable data from a formatted HD. So everything else is tin-foil hat overkill, unless you really have something criminal to hide.
 
Looks like the OP has disappeared. Too bad as this is (was) an interesting topic.
 

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Lenovo IdeaCenter 450
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My Computer My Computer

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Windows 10 Pro. 64/ version 1709 Windows 7 Pr...Intel i7-6800K @ 4.3Corsair Platinum 16 gig @2400EVGA GTX 1070 OC
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Home made Desktop
OS
Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
CPU
Intel i7-6800K @ 4.3
Motherboard
ASUS X-99 Deluxe II
Memory
Corsair Platinum 16 gig @2400
Graphics Card(s)
EVGA GTX 1070 OC
Monitor(s) Displays
Asus 27" LED LCD/VE278Q
Screen Resolution
1920-1080 or 1280-720 HDMI
Hard Drives
INTEL SSD 730-240 Gb Sata 3.0/
PSU
EVGA Platium 1200W
Case
Phanteks Luxe Tempered Glass 8 fans/ one radiator
Cooling
XSPC/ Water Cooled CPU
Keyboard
Das 4 Professional
Mouse
Logitech M705/MX Anywhere 2-S
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100 mbits
Antivirus
Microsoft Security Essentials/ Malwarebytes Premium 3.0/ SAS
Browser
I.E. 11 default/Firefox/ ISP Time Warner Cable/Spectrum
Other Info
LG BluRay Burner/
Sound system-KLipsch-THX/
Icy Dock ssd Hot Swap bays.

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Windows 7 Home Premium x64
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Windows 7 Home Premium x64
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