resolution problem after installation of windows 7

Look in this one again...not the following folder DriverStore

C:\Windows\System32\drivers\

It's not in here to.

Humm...I guess you'll have to go in the registry (see the path on attached thumbnail)

Start Menu=>Run + (type) regedit (open command prompt)

Then locate the Key "nvlddmkm" and delete it. Then reinstall your Acer Nvidia driver

I found it but I can't delete it.

How can i delete it?
 

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windows 7nvidia 8400 gs
Computer Manufacturer/Model Number
acer aspire 5720ZG
OS
windows 7
Graphics Card(s)
nvidia 8400 gs
It's not in here to.

Humm...I guess you'll have to go in the registry (see the path on attached thumbnail)

Start Menu=>Run + (type) regedit (open command prompt)

Then locate the Key "nvlddmkm" and delete it. Then reinstall your Acer Nvidia driver

I found it but I can't delete it.

How can i delete it?

Can't you right click the key, then delete?

The key might be active...
 

My Computer My Computer

At a glance

Windows 7 Professional SP1 - x64 [Non-UEFI Boot]Ivy Bridge Core i5 3570K (Delidded)G.Skill "Ares" DDR3 PC3-12800 - 1600MHz (16Gb)Asus Dual-RX480-O4G
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Professional SP1 - x64 [Non-UEFI Boot]
CPU
Ivy Bridge Core i5 3570K (Delidded)
Motherboard
Asus P8Z77-V LE PLUS
Memory
G.Skill "Ares" DDR3 PC3-12800 - 1600MHz (16Gb)
Graphics Card(s)
Asus Dual-RX480-O4G
Sound Card
Creative Sound Blaster Z w/5.1 sound system
Monitor(s) Displays
Asus IPS 23"
Screen Resolution
16/9
Hard Drives
Internal:
500Go Sata 6Gb/s (x2)
500Go Sata 3Gb/s (x2)
SSD 60Go Sata 6Gb/s
PSU
In Win C 900W Series 80+ Platinum
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Thermaltake Chaser A71
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Custom Water Cooling Loop
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Cooler Master QuickFire XTi
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Razer Imperator 2012 (4G)
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"Raid0" with Intel Smart Response Technology (HDD/SSD)
Humm...I guess you'll have to go in the registry (see the path on attached thumbnail)

Start Menu=>Run + (type) regedit (open command prompt)

Then locate the Key "nvlddmkm" and delete it. Then reinstall your Acer Nvidia driver

I found it but I can't delete it.

How can i delete it?

Can't you right click the key, then delete?

The key might be active...

No that doesn't work.
 

My Computer My Computer

At a glance

windows 7nvidia 8400 gs
Computer Manufacturer/Model Number
acer aspire 5720ZG
OS
windows 7
Graphics Card(s)
nvidia 8400 gs

My Computer My Computer

At a glance

Windows 7 Professional SP1 - x64 [Non-UEFI Boot]Ivy Bridge Core i5 3570K (Delidded)G.Skill "Ares" DDR3 PC3-12800 - 1600MHz (16Gb)Asus Dual-RX480-O4G
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Professional SP1 - x64 [Non-UEFI Boot]
CPU
Ivy Bridge Core i5 3570K (Delidded)
Motherboard
Asus P8Z77-V LE PLUS
Memory
G.Skill "Ares" DDR3 PC3-12800 - 1600MHz (16Gb)
Graphics Card(s)
Asus Dual-RX480-O4G
Sound Card
Creative Sound Blaster Z w/5.1 sound system
Monitor(s) Displays
Asus IPS 23"
Screen Resolution
16/9
Hard Drives
Internal:
500Go Sata 6Gb/s (x2)
500Go Sata 3Gb/s (x2)
SSD 60Go Sata 6Gb/s
PSU
In Win C 900W Series 80+ Platinum
Case
Thermaltake Chaser A71
Cooling
Custom Water Cooling Loop
Keyboard
Cooler Master QuickFire XTi
Mouse
Razer Imperator 2012 (4G)
Antivirus
MSE
Browser
IE 11.0.xxx Rtm
Other Info
"Raid0" with Intel Smart Response Technology (HDD/SSD)
I think i deleted it now.
Im restarting my laptop and gonna try installing the driver again.
 

My Computer My Computer

At a glance

windows 7nvidia 8400 gs
Computer Manufacturer/Model Number
acer aspire 5720ZG
OS
windows 7
Graphics Card(s)
nvidia 8400 gs
I tried installing it again but i didn't work.

It says it can't find a certain file.
 

My Computer My Computer

At a glance

windows 7nvidia 8400 gs
Computer Manufacturer/Model Number
acer aspire 5720ZG
OS
windows 7
Graphics Card(s)
nvidia 8400 gs
I tried installing it again but i didn't work.

It says it can't find a certain file.

But is your graphic card still works as normal now?

This mean you have badly updated the Graphic Card previously and now it is difficult to make the original drivers trigger properly
 

My Computer My Computer

At a glance

Windows 7 Professional SP1 - x64 [Non-UEFI Boot]Ivy Bridge Core i5 3570K (Delidded)G.Skill "Ares" DDR3 PC3-12800 - 1600MHz (16Gb)Asus Dual-RX480-O4G
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Professional SP1 - x64 [Non-UEFI Boot]
CPU
Ivy Bridge Core i5 3570K (Delidded)
Motherboard
Asus P8Z77-V LE PLUS
Memory
G.Skill "Ares" DDR3 PC3-12800 - 1600MHz (16Gb)
Graphics Card(s)
Asus Dual-RX480-O4G
Sound Card
Creative Sound Blaster Z w/5.1 sound system
Monitor(s) Displays
Asus IPS 23"
Screen Resolution
16/9
Hard Drives
Internal:
500Go Sata 6Gb/s (x2)
500Go Sata 3Gb/s (x2)
SSD 60Go Sata 6Gb/s
PSU
In Win C 900W Series 80+ Platinum
Case
Thermaltake Chaser A71
Cooling
Custom Water Cooling Loop
Keyboard
Cooler Master QuickFire XTi
Mouse
Razer Imperator 2012 (4G)
Antivirus
MSE
Browser
IE 11.0.xxx Rtm
Other Info
"Raid0" with Intel Smart Response Technology (HDD/SSD)
The graphic card still works normal on the standard VGA adapter.
Is there a way trigger the right driver?
 

My Computer My Computer

At a glance

windows 7nvidia 8400 gs
Computer Manufacturer/Model Number
acer aspire 5720ZG
OS
windows 7
Graphics Card(s)
nvidia 8400 gs
The graphic card still works normal on the standard VGA adapter.
Is there a way trigger the right driver?

I was asking that because you said previously on post #31:

"Problem of the resolution is solved! And the colors are back to normal!"

I wanted to make sure deleting the key have not mess it again...

The bad news:
As far my experience drove me to that issue...i had to reinstall my Os all over again, years ago on a XP Os.
 

My Computer My Computer

At a glance

Windows 7 Professional SP1 - x64 [Non-UEFI Boot]Ivy Bridge Core i5 3570K (Delidded)G.Skill "Ares" DDR3 PC3-12800 - 1600MHz (16Gb)Asus Dual-RX480-O4G
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Professional SP1 - x64 [Non-UEFI Boot]
CPU
Ivy Bridge Core i5 3570K (Delidded)
Motherboard
Asus P8Z77-V LE PLUS
Memory
G.Skill "Ares" DDR3 PC3-12800 - 1600MHz (16Gb)
Graphics Card(s)
Asus Dual-RX480-O4G
Sound Card
Creative Sound Blaster Z w/5.1 sound system
Monitor(s) Displays
Asus IPS 23"
Screen Resolution
16/9
Hard Drives
Internal:
500Go Sata 6Gb/s (x2)
500Go Sata 3Gb/s (x2)
SSD 60Go Sata 6Gb/s
PSU
In Win C 900W Series 80+ Platinum
Case
Thermaltake Chaser A71
Cooling
Custom Water Cooling Loop
Keyboard
Cooler Master QuickFire XTi
Mouse
Razer Imperator 2012 (4G)
Antivirus
MSE
Browser
IE 11.0.xxx Rtm
Other Info
"Raid0" with Intel Smart Response Technology (HDD/SSD)
That's not a big problem because i didn't installed much programs.
But im going to do that in the morning.
Thanks for helping me.
 

My Computer My Computer

At a glance

windows 7nvidia 8400 gs
Computer Manufacturer/Model Number
acer aspire 5720ZG
OS
windows 7
Graphics Card(s)
nvidia 8400 gs
I was wondering is that the fact you putted to standard VGA Graphic adapter, haven't put aswell the windows basic theme in personalize Tab. What kind of theme are you using right now?

In safemode I put the driver back to standard VGA graphic adapter and everything work like normal but the aero mode and the design stuff of windows 7 doesn't work.

Does anyone know how to resolve this?
 

My Computer My Computer

At a glance

Windows 7 Professional SP1 - x64 [Non-UEFI Boot]Ivy Bridge Core i5 3570K (Delidded)G.Skill "Ares" DDR3 PC3-12800 - 1600MHz (16Gb)Asus Dual-RX480-O4G
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Professional SP1 - x64 [Non-UEFI Boot]
CPU
Ivy Bridge Core i5 3570K (Delidded)
Motherboard
Asus P8Z77-V LE PLUS
Memory
G.Skill "Ares" DDR3 PC3-12800 - 1600MHz (16Gb)
Graphics Card(s)
Asus Dual-RX480-O4G
Sound Card
Creative Sound Blaster Z w/5.1 sound system
Monitor(s) Displays
Asus IPS 23"
Screen Resolution
16/9
Hard Drives
Internal:
500Go Sata 6Gb/s (x2)
500Go Sata 3Gb/s (x2)
SSD 60Go Sata 6Gb/s
PSU
In Win C 900W Series 80+ Platinum
Case
Thermaltake Chaser A71
Cooling
Custom Water Cooling Loop
Keyboard
Cooler Master QuickFire XTi
Mouse
Razer Imperator 2012 (4G)
Antivirus
MSE
Browser
IE 11.0.xxx Rtm
Other Info
"Raid0" with Intel Smart Response Technology (HDD/SSD)
I was wondering is that the fact you putted to standard VGA Graphic adapter, haven't put aswell the windows basic theme in personalize Tab. What kind of theme are you using right now?

In safemode I put the driver back to standard VGA graphic adapter and everything work like normal but the aero mode and the design stuff of windows 7 doesn't work.

Does anyone know how to resolve this?

I've reinstalled windows and installed the acer driver right away and it worked for like 5 min. Because when i restarted the computer I got the error nvlddmkm.sys.

I used an aero theme. That should work with a working driver.
 

My Computer My Computer

At a glance

windows 7nvidia 8400 gs
Computer Manufacturer/Model Number
acer aspire 5720ZG
OS
windows 7
Graphics Card(s)
nvidia 8400 gs
i was wondering is that the fact you putted to standard vga graphic adapter, haven't put aswell the windows basic theme in personalize tab. What kind of theme are you using right now?

in safemode i put the driver back to standard vga graphic adapter and everything work like normal but the aero mode and the design stuff of windows 7 doesn't work.

Does anyone know how to resolve this?

i've reinstalled windows and installed the acer driver right away and it worked for like 5 min. Because when i restarted the computer i got the error nvlddmkm.sys.

I used an aero theme. That should work with a working driver.

try that solution:

symptom of this crash

• the screen flickering (small flashes),
• a screen that "freezes" (image)
• a screen is totally black and a return windows

indeed sometimes we fall on pseudo-solutions (incomplete, poorly explained) or solutions too complicated for most of you.
So i will explain my solution in trying to be as clear as possible.
Steps to follow - part one

• go to the nvidia file => c: \ nvidia
• find a file named "nvlddmkm.sy_" => c: \ nvidia \ displaydriver "version number of the driver (eg 186.81)" internationaldisplaynvlddmkm.sy_

note: It may well be on the path differs depending on each computer.
• copy the file to the root of c: => c: \ nvlddmkm.sy_
steps to follow - part two

• return in the file system or operating systems are stored => c: \ windows \ system32 \ drivers
• once in this folder, locate the file "nvlddmkm.sys" defective and rename it to nvlddmkm.sys.old "
steps to follow - part three

• Open CMD Prompt ms-dos => windows key + r> type "cmd"
• once Open CMD Prompt open, type the following commands:

1) "cd" and hit enter (to go straight to the root of the hard disk => c:
2) "expand.exe nvlddmkm.sy_ nvlddmkm.sys" then hit enter
"this command allows you to unzip the file" nvlddmkm.sy_ "that you placed at the root of c: And to transform it to create the new" nvlddmkm.sys ""

• pick it => c: \ nvlddmkm.sys
• and put the folder => c: \ windows \ system32 \ drivers

it only remains for you to reboot. .

All that came from a french forums, i had to google translate and modify some wording to fit the command.
 
Last edited:

My Computer My Computer

At a glance

Windows 7 Professional SP1 - x64 [Non-UEFI Boot]Ivy Bridge Core i5 3570K (Delidded)G.Skill "Ares" DDR3 PC3-12800 - 1600MHz (16Gb)Asus Dual-RX480-O4G
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Professional SP1 - x64 [Non-UEFI Boot]
CPU
Ivy Bridge Core i5 3570K (Delidded)
Motherboard
Asus P8Z77-V LE PLUS
Memory
G.Skill "Ares" DDR3 PC3-12800 - 1600MHz (16Gb)
Graphics Card(s)
Asus Dual-RX480-O4G
Sound Card
Creative Sound Blaster Z w/5.1 sound system
Monitor(s) Displays
Asus IPS 23"
Screen Resolution
16/9
Hard Drives
Internal:
500Go Sata 6Gb/s (x2)
500Go Sata 3Gb/s (x2)
SSD 60Go Sata 6Gb/s
PSU
In Win C 900W Series 80+ Platinum
Case
Thermaltake Chaser A71
Cooling
Custom Water Cooling Loop
Keyboard
Cooler Master QuickFire XTi
Mouse
Razer Imperator 2012 (4G)
Antivirus
MSE
Browser
IE 11.0.xxx Rtm
Other Info
"Raid0" with Intel Smart Response Technology (HDD/SSD)
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