I can't modify the H.Position or V.position of the image because they are grayed out. Maybe driver sweeper was the problem, I uninstalled my video cards drivers with driver sweeper and in the log file I see that it delete some .inf files and registry entries relative with my monitor, this is the entire log:
21/01/2014 18:00:38 >> DDU Version: 10.2
21/01/2014 18:00:39 >> OS: Windows 7 or Server 2008r2
21/01/2014 18:00:39 >> Architecture: x64
21/01/2014 18:00:39 >> PCI\VEN_1002&DEV_679E&SUBSYS_E246174B&REV_00\4&10C350E0&0&00E0: AMD Radeon HD 7800 Series
PCI\VEN_8086&DEV_0152&SUBSYS_01521849&REV_09\3&11583659&0&10: Intel(R) HD Graphics
2 matching device(s) found.
21/01/2014 18:00:39 >> Driver Version : 9.17.10.2932
21/01/2014 18:00:39 >> User Account Name : Antonio
21/01/2014 18:01:01 >> Uninstalling AMD driver ...
21/01/2014 18:01:01 >> Executing ddudr Remove
21/01/2014 18:01:01 >> PCI\VEN_1002&DEV_679E&SUBSYS_E246174B&REV_00\4&10C350E0&0&00E0: Removed
1 device(s) were removed.
21/01/2014 18:01:01 >> ddudr Remove Display Complete
21/01/2014 18:01:01 >> HDAUDIO\FUNC_01&VEN_1002&DEV_AA01&SUBSYS_00AA0100&REV_1003\5&35F8DBD5&0&0001: Removed
1 device(s) were removed.
21/01/2014 18:01:01 >> ddudr Remove Audio/HDMI Complete
21/01/2014 18:01:02 >> ddudr Remove Monitor started
21/01/2014 18:01:02 >> -DISPLAY\BNQ78C4\5&389A7646&0&UID265- Monitor id found
21/01/2014 18:01:02 >> DISPLAY\BNQ78C4\5&389A7646&0&UID265 : Removed
1 device(s) were removed.
21/01/2014 18:01:02 >> -DISPLAY\BNQ78C4\5&389A7646&0&12345678&01&00- Monitor id found
21/01/2014 18:01:02 >> DISPLAY\BNQ78C4\5&389A7646&0&12345678&01&00 : Removed
1 device(s) were removed.
21/01/2014 18:01:04 >> Cleaning Directory
21/01/2014 18:01:06 >> Deleting some specials folders, it could take some times...
21/01/2014 18:01:06 >> C:\Program Files\AMD\SteadyVideo
21/01/2014 18:01:06 >> Could not find directory 'C:\ProgramData\ATI'.
21/01/2014 18:01:07 >> Could not find directory 'C:\Program Files (x86)\AMD APP'.
21/01/2014 18:01:07 >> Deleting some specials folders, it could take some times...
21/01/2014 18:01:07 >> Method failed with unexpected error code 3.SteadyVideo testdelete
21/01/2014 18:01:07 >> Cleaning known Regkeys
21/01/2014 18:01:07 >> Starting dcom/clsid/appid/typelib cleanup
21/01/2014 18:01:07 >> Interface CleanUP
21/01/2014 18:01:08 >> ActiveMovie Filter Class Manager cleanUP
21/01/2014 18:01:08 >> AppID and clsidleftover cleanUP
21/01/2014 18:01:09 >> Record CleanUP
21/01/2014 18:01:09 >> Assembly CleanUP
21/01/2014 18:01:09 >> ngenservice Clean
21/01/2014 18:01:09 >> Pnplockdownfiles region cleanUP
21/01/2014 18:01:10 >> Cleaning LEGACY_AMDKMDAG
21/01/2014 18:01:10 >> Cannot delete a subkey tree because the subkey does not exist. Legacy_AMDKMDAG (error)
21/01/2014 18:01:10 >> Cannot delete a subkey tree because the subkey does not exist. Legacy_AMDKMDAG (error)
21/01/2014 18:01:10 >> Cannot delete a subkey tree because the subkey does not exist. Legacy_AMDKMDAG (error)
21/01/2014 18:01:10 >> System environement cleanUP
21/01/2014 18:01:10 >> Remove eventviewer stuff
21/01/2014 18:01:10 >> No value exists with that name. HydraVisionDesktopManager
21/01/2014 18:01:10 >> No value exists with that name. GRID
21/01/2014 18:01:11 >> No value exists with that name. HydraVisionMDEngine
21/01/2014 18:01:11 >> Removing known Packages
21/01/2014 18:01:11 >> No value exists with that name. AMD AVT
21/01/2014 18:01:11 >> Starting S-1-5-xx region cleanUP
21/01/2014 18:01:11 >> End S-1-5-xx region cleanUP
21/01/2014 18:01:11 >> SharedDLLs CleanUP
21/01/2014 18:01:12 >> Executing Driver Store cleanUP(Find OEM)...
21/01/2014 18:01:13 >> ddudr DP_ENUM RESULT BELOW
21/01/2014 18:01:13 >> The following third-party driver packages are installed on this computer:
oem0.inf
Provider: Microsoft
Class: Stampanti
oem1.inf
Provider: Realtek Semiconductor Corp.
Class: Controller audio, video e giochi
oem10.inf
Provider: Intel Corporation
Class: Controller IDE ATA/ATAPI
oem11.inf
Provider: Intel(R) Corporation
Class: Controller USB (Universal Serial Bus)
oem12.inf
Provider: Intel(R) Corporation
Class: Controller USB (Universal Serial Bus)
oem13.inf
Provider: Intel
Class: Dispositivi di sistema
oem14.inf
Provider: Asmedia Technology
Class: Controller IDE ATA/ATAPI
oem15.inf
Provider: Apple, Inc.
Class: Controller USB (Universal Serial Bus)
oem16.inf
Provider: ASRock
Class: Controller di archiviazione
oem17.inf
Provider: Advanced Micro Devices, Inc.
Class: Schede video
oem18.inf
Provider: Advanced Micro Devices
Class: Controller audio, video e giochi
oem19.inf
Provider: Advanced Micro Devices, Inc.
Class: Schede video
oem2.inf
Provider: Realtek
Class: Schede di rete
oem20.inf
Provider: Advanced Micro Devices
Class: Controller audio, video e giochi
oem21.inf
Provider: DT Soft Ltd
Class: Dispositivi di sistema
oem22.inf
Provider: Microsoft
Class: Stampanti
oem23.inf
Provider: Intel
Class: Dispositivi di sistema
oem24.inf
Provider: Microsoft
Class: Stampanti
oem25.inf
Provider: Adobe
Class: Stampanti
oem26.inf
Provider: Hewlett-Packard
Class: Stampanti
oem27.inf
Provider: Hewlett-Packard
Class: Stampante compatibile IEEE 1284.4
oem28.inf
Provider: Hewlett-Packard
Class: Controller USB (Universal Serial Bus)
oem29.inf
Provider: Hewlett-Packard
Class: Dispositivi di acquisizione immagini
oem3.inf
Provider: Intel
Class: Dispositivi di sistema
oem30.inf
Provider: Advanced Micro Devices, Inc.
Class: Schede video
oem31.inf
Provider: Advanced Micro Devices, Inc.
Class: Schede video
oem32.inf
Provider: Advanced Micro Devices
Class: Controller audio, video e giochi
oem33.inf
Provider: Intel Corporation
Class: Schede video
oem34.inf
Provider: BenQ
Class: Schermi
oem35.inf
Provider: Microsoft
Class: Controller comune Microsoft per classe Windows
oem36.inf
Provider: Apple
Class: Schede di rete
oem37.inf
Provider: Advanced Micro Devices, Inc.
Class: Schede video
oem38.inf
Provider: Advanced Micro Devices
Class: Controller audio, video e giochi
oem4.inf
Provider: Intel
Class: Dispositivi di sistema
oem5.inf
Provider: Intel
Class: Dispositivi di sistema
oem6.inf
Provider: Intel
Class: Dispositivi di sistema
oem7.inf
Provider: Intel
Class: Controller USB (Universal Serial Bus)
oem8.inf
Provider: Intel Corporation
Class: Schede video
oem9.inf
Provider: Intel(R) Corporation
Class: Controller audio, video e giochi
21/01/2014 18:01:13 >> oem17 Found
21/01/2014 18:01:13 >> -f dp_delete "oem17.inf"
21/01/2014 18:01:13 >> Executing Driver Store CleanUP(delete OEM)...
21/01/2014 18:01:17 >> Driver package 'oem17.inf' deleted.
21/01/2014 18:01:17 >> oem18 Found
21/01/2014 18:01:17 >> -f dp_delete "oem18.inf"
21/01/2014 18:01:17 >> Executing Driver Store CleanUP(delete OEM)...
21/01/2014 18:01:17 >> Driver package 'oem18.inf' deleted.
21/01/2014 18:01:17 >> oem19 Found
21/01/2014 18:01:17 >> -f dp_delete "oem19.inf"
21/01/2014 18:01:17 >> Executing Driver Store CleanUP(delete OEM)...
21/01/2014 18:01:19 >> Driver package 'oem19.inf' deleted.
21/01/2014 18:01:19 >> oem20 Found
21/01/2014 18:01:19 >> -f dp_delete "oem20.inf"
21/01/2014 18:01:19 >> Executing Driver Store CleanUP(delete OEM)...
21/01/2014 18:01:19 >> Driver package 'oem20.inf' deleted.
21/01/2014 18:01:19 >> oem30 Found
21/01/2014 18:01:19 >> -f dp_delete "oem30.inf"
21/01/2014 18:01:19 >> Executing Driver Store CleanUP(delete OEM)...
21/01/2014 18:01:20 >> Driver package 'oem30.inf' deleted.
21/01/2014 18:01:20 >> oem31 Found
21/01/2014 18:01:20 >> -f dp_delete "oem31.inf"
21/01/2014 18:01:20 >> Executing Driver Store CleanUP(delete OEM)...
21/01/2014 18:01:21 >> Driver package 'oem31.inf' deleted.
21/01/2014 18:01:21 >> oem32 Found
21/01/2014 18:01:21 >> -f dp_delete "oem32.inf"
21/01/2014 18:01:21 >> Executing Driver Store CleanUP(delete OEM)...
21/01/2014 18:01:21 >> Driver package 'oem32.inf' deleted.
21/01/2014 18:01:21 >> oem37 Found
21/01/2014 18:01:22 >> -f dp_delete "oem37.inf"
21/01/2014 18:01:22 >> Executing Driver Store CleanUP(delete OEM)...
21/01/2014 18:01:22 >> Driver package 'oem37.inf' deleted.
21/01/2014 18:01:23 >> oem38 Found
21/01/2014 18:01:23 >> -f dp_delete "oem38.inf"
21/01/2014 18:01:23 >> Executing Driver Store CleanUP(delete OEM)...
21/01/2014 18:01:23 >> Driver package 'oem38.inf' deleted.
21/01/2014 18:01:23 >> Driver Store CleanUP Complete.
21/01/2014 18:01:24 >> Cleaning Process/Services...
21/01/2014 18:01:24 >> Restarting Computer