PlanetDeusEx | Deus Ex | Help | Tech Support FAQ
Technical Support Frequently Asked Questions

  1.   General
  2.   Video Cards
  3.   Installation and Setup
  4.   Gameplay Problems
  5.   CD-ROM Problems
  6.   Sound
  7.   Game Crashes
  8.   Joystick

Chapter I: General

Minimum System Requirements
  • Pentium II 300 or equivalent
  • Windows 95/98
  • 64 MB RAM
  • 150 MB uncompressed hard disk space
  • DirectX 7.0a-compliant 3D accelerated video card
  • DirectX 7.0a-compliant sound card
  • DirectX 7.0a (included)
  • 4X CD-ROM drive
  • Keyboard and mouse
Recommended System Requirements
  • Pentium III or AMD Athlon processor
  • 128 MB RAM
  • 3D accelerator with 16 MB VRAM
  • 750 MB uncompressed hard disk space
  • 8X CD-ROM drive
  • EAX- or A3D-compliant audio card
Hard drive space

Eidos strongly recommends that you have at least 500 MB free on your system at all times for the correct operation of Windows and the relevant game software.

General Video card issues

3D accelerated video card required, 3Dfx Glide and Direct3D supported. You may need to update the drivers for your system hardware for the game to function properly. Driver files are often obtainable via the web sites of their manufacturers.


Deus Ex was not tested with laptop/notebook systems so Eidos cannot guarantee compatibility. Due to the variety of hardware configurations that ship with today's laptop systems, it would be impossible to configure a game that would work with all of them. Many laptop/notebook computers are limited in their ability to be used as a gaming machine. This is because of memory configurations, their micro-channel architecture, port configurations (i.e. no place for a joystick) and sound systems that are primarily designed to be used with productivity software.

The other common problem is that laptop systems will attempt to compress the traditional version of the standard 101-function keyboard (found on almost all desktop systems) into a much smaller keyboard configuration. This is usually done by relying on multifunction keys that allow the user to assign different functions to the same key. Unfortunately, this has been known to cause problems with Eidos games.

Operating System issues

Deus Ex is not supported using Windows 2000, Windos ME (Millenium Edition), Windows NT, compressed hard drives, or Windows emulators. Although the game might run, its performance and stability will be questionable.

Chapter II: Video Cards


You must have a 3D Accelerator card that supports 100% Direct3D or Glide to play Deus Ex. If you decide to run in either Softeware or OpenGL modes, the game may run very slowly or may not run at all.

Supported Graphic Cards by Manufacturer

Eidos has tested Deus Ex with and are satisfied with the game's performance on the following 3D chipsets:
  • 3DF
    • Voodoo
    • Voodoo 2
    • Voodoo 3
    • Voodoo 4/5
  • ATI
    • Rage 128
    • Rage Fury
    • Rage Fury Maxx

      ***If you are having problems with the 128 & Fury chipsets, you may be able to download special drivers from ATI by clicking "here". Note:The use of special drivers obtained from ATI is done at your own risk.
  • Intel
    • 810
  • Matrox
    • G200
    • G400
  • NVidia
    • TNT
    • TNT2
    • GeForce
    • GeForce2
  • S3/Diamond
    • Savage 4
    • Savage 2000
General Issues With Direct3D Cards

On some of the cards that support Direct3D, there are minor sorting issues on signs, computer terminals and objects seen at long range. If you switch the Texture Color Depth setting (found under Display, in Game Options) to 32-bit color, the sorting issues will disappear. As an alternative, some cards can be forced to use a 24-bit or 32-bit z-buffer from the Windows control panel display settings. Consult your video card documentation for details on this alternate procedure.

Known Issues With Specific Video Cards

Matrox G200
Running the game in 32-bit color mode is not recommended with this chipset.

3Dfx Voodoo 1
This chip only supports 640x480 in 16-bit color. Eidos recommends that you set all detail settings to low.

3Dfx Voodoo 2
The Voodoo 2 only supports 640x480 and 800x600 resolutions, in 16-bit color. You will be able to run Deus Ex at 1024x768 with 2 Voodoo 2 cards in SLI mode.

Intel 810
Running the game in 32-bit color is not recommended.

Savage 4, Diamond S540
Setting the UI/Menu Background to Snapshot will result in some graphic corruption, Eidos recommends that you use the Render 3D or Black setting.

Chapter III: Installation and Setup

Preparing your Hard Drive

To ensure that your installation is trouble free, you should check to see that your hard drive and file system are both tuned for optimum performance. Windows 95/98 comes with two utility programs that find and fix any errors and optimize your hard drive’s performance.

The first of these programs is called ScanDisk. ScanDisk will check your hard drive for problems and can fix any that it finds. You can run ScanDisk by clicking on the START button from the Windows 95/98 Taskbar, followed by Programs, then Accessories, then System Tools, and finally ScanDisk.

Once ScanDisk has finished running, you should optimize your hard drive’s performance by running a program called Disk Defragmenter. You can run Disk Defragmenter by clicking on the START button from the Windows 95/98 desktop, followed by Programs, then Accessories, then System Tools, and finally Disk Defragmenter.

Installation of Deus Ex

Insert the Deus Ex CD in to your CD-ROM drive. If the autoplay feature on your drive has been enabled, click the Install Deus Ex button and follow the instructions.

If the installation screen does not appear after a minute or so, double-click on the My Computer icon on your Windows desktop. Double-click on the icon that represents your CD-ROM drive. Once you see the list of files appear, click on the file named autoplay.exe. The autoplay screen should then display and you can proceed with the installation by clicking on the Install Deus Ex button.

Known Issues During Installation

I receive a " not found" error message when installing or running Deus Ex. This error message is usually the result of your computer using MS-DOS (16-bit) drivers instead of Windows 95 (32-bit) drivers for your CD-ROM drive. You can easily check to see if this is causing problems by opening the CONTROL PANEL (either click on the "My Computer" icon or click on the START button followed by "Settings," then "Control Panel"). In the Control Panel window, double-click on the "System" icon then click on the "Performance" tab. You should now see a summary of the performance status of your computer. One of the lines should say "File System: 32-bit" and the last line should say "Your system is configured for optimal performance." If you see a message saying "Drive X is using MS-DOS compatibility mode," then you will need to contact your system vendor to obtain and install 32-bit drivers for your CD-ROM drive.

The Installer keeps stopping when a certain percentage is complete, so I can't install Deus Ex. There are three likely causes:
  • You may have run out of free space on your hard drive. Please remove unwanted programs to free up additional space for the game, and then reinstall Deus Ex. You'll need at least 150 MB free to install the game.
  • It's possible that files are being copied to a corrupted area of your hard drive. If this is so, you'll need to run the ScanDisk program and make sure to use the Thorough option. After ScanDisk has finished running and has informed you that your drive is free of errors, try to re-install.
  • The last major cause is dirt or fingerprints on the CD-ROM disc itself. Examine the bottom of the disc; if you see any fingerprints or dirt, carefully clean the disc using a clean, soft, lint-free cloth by wiping from the center of the disc (near the hole) towards the outer edge in a straight line.

Chapter IV: Gameplay Problems

Common Gameplay Notes

Probably the most common problem you may face while playing is not being able to find puzzle items or locations. Of course you can call Eidos' automated hint line at (900) 773-4367. The charge is 99 cents per minute. You must be 18 years of age or older or have a parents permission to make the call.

Auto Saving & Loading

During the game, you will move through map transitions, leaving one map and entering another. At these map transitions the screen displays the word SAVING followed by the word LOADING before the game continues to the next map. The game automatically saves the state of the previous map, but it DOES NOT automatically save your game. You will need to manually save your game through the game menu or by using the Quick Save hot key.

Climbing Ladders

When mounting a ladder from the top, or climbing off a ladder onto a ledge, it helps if you hold the crouch button. Having your character crouch while attempting to mount a ladder from the top (going down) also decreases the chances of "falling" off the top of the ladder. Holding the crouch button down while moving up and off a ladder onto a ledge makes it easier to move onto the ledge.

When climbing up and down a ladder, you are allowed some forward and sideways movement but be careful not to fall off the side or front of the ladder. You can prevent yourself from falling off by always looking towards the ladder and keeping yourself centered on it. This is especially true while moving down a ladder – if you look away from the ladder while moving down you may move forward and fall off if you aren't careful.


As you move through the world, the crosshairs at the center of the screen will change color depending on the nature of the person or thing you position it over. If the crosshairs are GREEN, you have a friendly or neutral person or animal targeted. If the crosshairs are RED, you are targeting an enemy. If the crosshairs are WHITE, you have an object targeted. Pay close attention to the crosshairs' color, some characters who look like enemies may actually be friendly depending on the current scenario.

Turrets and Security Systems

If you successfully log into or hack a security system, a security system screen is displayed. This screen allows you to change the state of cameras, doors, locks and, at higher skill levels, turrets. If the turret is set to allies, the turret will attack you and your allies. If the turret is set to enemies, the turret will only attack your enemies. If the turret is set to everything, the turret will attack everyone and everything in the area. Set the turret to disabled, to completely disable the turret.

Enemy Arm Injuries

Arm injuries can make the enemy drop their weapons. To do this, shoot the enemy in the arm repeatedly until their weapon falls to the ground.

You will not be able to pick up weapons dropped by an enemy.

Skill Levels

Do not take your skill levels lightly, they make a huge difference in the way your Deus Ex game plays out. Remember to upgrade your skill levels throughout the game as you obtain skill points. The non-weapon based skills are just as powerful or even more powerful compared to your weapon skills. If you frequently run out of lockpicks or multitools, you may want to consider upgrading your lockpicking and electronics skill levels to "Trained" or higher. If you want to hack computers, ATM's and security systems, your computer skill will need to be set at "Trained" or higher.

You won't be able to train up to master level in every skill so be careful how you allocate your skill points. Once they're spent, you can't get them back.


Augmentations are special abilities that you can turn on and off at will. The augmentation canisters needed to install augmentations and the upgrade canisters to increase their effectiveness are usually well-hidden. These canisters are very valuable so you may want to take the extra time to search for them or spend the resources required to reach them.

Combat vs. Stealth

Using combat to complete mission objectives is often an option but it isn't always the best option. You should also attempt to use stealth and cunning to outsmart your opponents. Try to keep silent and stay out of sight of enemies and cameras, and use your surroundings to your advantage.

Stuck??? or Can't Find an Exit???

Explore the entire area, talk to the people in the area, look around for ventilation shafts in the floors and walls, hidden ladders, doorways and keypads. Remember that you may have been given or found a map of the current area that is stored in your image banks. There is almost always another route to get to where you want to go.

Chapter V: CD-ROM Problems

General CD-ROM Trouble Shooting

There are a few common causes for your computer to have trouble reading the game disk.

First, the disk in question may be damaged or scratched, which prevents the CD-ROM drive from properly reading it**. Smudges and fingerprints may have the same effect - those in particular can be cleaned.

Second, consider that your CD-ROM drive may be showing signs of needing maintenance, is not properly installed, or may have loose cable connections. Also, if you have more than one CD drive, it is important you use the first-occurring drive to handle the game disk. [This also prevents general game slow-down].

Finally, there may be a problem with your disk. This is far less common than the first two scenarios; but if you think there is a defect, please send the disk, your packaging, and a description of your problem to the following address:
Eidos Interactive
Technical Support
651 Brannan Street, Fourth Floor
San Francisco, CA 94107
Please allow 4-5 weeks for shipping. We will thoroughly test the disc and notify you of the results. [If we can recreate the problem, a new disk will be sent to you free of charge if you are still within the product's warranty period].

** If the disc is damaged, and you want a replacement, please send the disk as noted above, with a check or money order written out to 'Eidos Interactive,' for the amount of $15.00.

Chapter VI: Sound

When the 3D sound is enabled there is no sound at all.

Your sound card does not support A3D or EAX. You will need to disable the 3D sound and restart the game.

Chapter VII: Game Crashes

Known Game Crash Issues

When I start Deus Ex, my mouse cursor disappears and my computer locks-up. Chances are your audio card drivers are not compatible with DirectX. The only solution is to get DirectX 7 compatible drivers from your audio card manufacturer.

It is very important that you have DirectX 7.0a on your system. Deus Ex takes advantage of new 3d sound technology offered in DirectX 7.0a, and cannot run without it.

When I start Deus Ex, I receive the following error message: "The application Deus Ex.exe referenced memory at address xxxx:xxxx that can't be read from." Chances are your video card drivers are not compatible with DirectX. The only solution is to get DirectX 7 compatible drivers from your video card manufacturer.

Deus Ex is crashing to the desktop with no error messages. This can be caused by several different things. Here's a list of the most common culprits associated with these crashes:
  • Make sure DirectX 7 has been installed properly.
  • Make sure the game has been installed properly.
  • Make sure the CD-ROM is clean (check for both scratches and smudges on the reading surface of both CD's).
  • Make sure you have the latest Windows 95/98 drivers for your video card and that they are DirectX 7 compatible.
  • Make sure you have the latest Windows 95/98 drivers for your sound card and that they are DirectX 7 compatible.
  • Make sure Virtual Memory is enabled on your system.
  • Run ScanDisk.
  • Run Disk Defragmenter.
  • Make sure you do not have any Anti-Virus utilities running (like Norton's AntiVirus) while installing or playing Deus Ex.
  • Make sure you do not have any 3rd party Windows 95/98 memory management utilities (like QuarterDeck's QEMM 8.0 for Windows 95) running resident prior to playing Deus Ex.
  • Do not overclock your system, the results are unpredictable.
  • Make sure you do not have any 3rd party Windows 95/98 disk caching utilities running resident prior to playing Deus Ex.
  • Make sure you do not have Norton's Crash Protector running resident prior to playing Deus Ex.
  • Try uninstalling and then reinstalling the game.
  • Try exiting the game, rebooting your machine, and re-entering the game.
Note that if your system crashes to the desktop while playing Deus Ex, you should probably reboot your computer before starting a new play session. Otherwise, DirectDraw or DirectSound may be in a locked state, and the game will be unable to use your sound or video hardware.

Chapter VIII: Joystick

Here is how to set up Deus Ex to run with a Joystick (by Sociopath) Go to your Deusex folder, open deusex.ini, change "UseJoystick=False" to "UseJoystick=True", and save and close deusex.ini

Open user.ini and scroll down to the following commands:
JoyX=Axis astrafe speed=2
JoyY=Axis aBaseY speed=2
JoyU=Axis aturn speed=5.9
JoyV=Axis aLookUp speed=-3
JoyX,Y,Z, R, U,and V are for your Joystick movement control. The Axis commands for these controls are as follows:
Axis astrafe speed= ( Strafing left and right )
Axis aBaseY speed= ( Moving up and back )
Axis aturn speed= ( Turning left and right )
Axis aLookUp speed= ( Looking up and down )
The number that follows the comand control the speed at which you turn or strafe, move forward, backward and look up and down i.e: Axis aturn speed=5.9
JoyX is for left and right movement of joystick
JoyY is forward and backward movement of joystick
JoyZ is for Throttle control
JoyR is for Rudder control
JoyU and V are for trackball control
Once you have customized your joystick movements you can also assign the comands for your joystick buttons and hat switch's or pov's

A Panther XL joystick commands look like this:
Joy5=activatebelt 5
Joy6=activatebelt 6
Joy7=activatebelt 7
Joy8=activatebelt 8
Joy10=activatebelt 0
Joy13=activatebelt 9
JoyPovRight=activatebelt 2
JoyPovLeft=activatbelt 4
JoyPovDown=activatebelt 3
JoyX=Axis aturn speed=2
JoyY=Axis aBaseY speed=2
JoyZ=Axis astrafe speed=2
JoyU=Axis aLookUp speed=-3
JoyV=Axis aLookUp speed=-3
JoyPovRight=activatebelt 2
JoyPovLeft=activatbelt 4
JoyPovDown=activatebelt 3
Save and close user.ini. Run the game and you got stick! | GameSpy | Comrade | Arena | FilePlanet | GameSpy Technology
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