1. TechSpot is dedicated to computer enthusiasts and power users. Ask a question and give support. Join the community here.
    TechSpot is dedicated to computer enthusiasts and power users.
    Ask a question and give support.
    Join the community here, it only takes a minute.
    Dismiss Notice

DirectX 10 downgrade to DirectX 9

By martindeck ยท 26 replies
Feb 5, 2008
  1. I have a DirectX 10, says the System Information. I want to downgrade my DirectX down to DirectX 9, because I want to know if the DirectX is the cause of my game's graphics problem.

    Now, I have Windows Vista Home Premium 32bit System. Would downgrading DirectX be fatal? Would there be unacceptable changes?
    If not:
    a) Where can I download DirectX 9
    b) How can I downgrade DirectX 10
    c) How can I install DirectX 9
  2. frankibo

    frankibo TS Rookie Posts: 60

    What you are asking is nearly impossible to do. You can't downgrade your version of DirectX. There will be an option to unistall it, but the information of the version will remain in the regristry. And if you try to erase directx 10 out of the registry you will get trouble. So this is not the option.

    To solve your VGA problem I would advice to download an older driver. Maybe that will help.

    Good luck, let me know of it works.
  3. Mictlantecuhtli

    Mictlantecuhtli TS Evangelist Posts: 4,049   +11

    You can download the latest DirectX from here.

    Vista has DirectX9 libraries as well as older ones, just check \Windows\system32\d3d8.dll for example.

    Graphics problems in games are usually related to graphics card drivers, not DirectX.
  4. SNGX1275

    SNGX1275 TS Forces Special Posts: 10,546   +430

    What game? You may be able to force DX9.
  5. martindeck

    martindeck TS Rookie Topic Starter Posts: 26

    The Sims 2. The graphics are superb. The Game runs exceptionally well on my computer. Except for one thing - the Sims themselves. Their sprites lash out of the screen. It's cause is most probably lighting. And I figured DirectX 10 is too advanced for the DirectX 9.0 requiring Sims 2.
  6. SNGX1275

    SNGX1275 TS Forces Special Posts: 10,546   +430

    Its probably a driver issue like everyone said, The Sims 2 only uses DirectX 9.0c, which Vista uses. Apparently, unlike previous versions of DirectX 10 isn't backwards compatable, so Vista has seperate 9 and 10.
  7. Bigfellla

    Bigfellla TS Rookie Posts: 97

    Direct X 10 will be coming to XP soon, see falling leaf studios in google.
  8. martindeck

    martindeck TS Rookie Topic Starter Posts: 26

    I can't understand but I already have the latest device drivers from ATI (because my video card is ATI Radeon X1200) and I still have problems...
  9. kimsland

    kimsland Ex-TechSpotter Posts: 13,810

    Actually what are your System specs ?

    In regards to your original questions, they have been answered.

    In regards to errors on your Video card or system in that game, is a new question.

    Does your video work well on playing other games ?
    Is this only related to The Sims

    Here's another old post, with the same issue:
    (I had to search through my posts)

    Does that help ? maybe you could contact that member, if he got it resolved, and what resolved it (it was basically left without a final answer)
  10. AlbertLionheart

    AlbertLionheart TechSpot Chancellor Posts: 1,997

    Try this:
    Go to Control panel > Device manager > display adapters and check the driver version.
    Go to the ATi website and download the latest driver for your card if it is better than then one you found already on the system. Update the driver if requried
    If no improvement:
    Backup your data files
    Uninstall Directx whatever version
    Uninstall SIMS
    Restart the PC and reinstall SIMS and allow the game to install the version of directX
  11. martindeck

    martindeck TS Rookie Topic Starter Posts: 26

    My System Specs are actually:

    OS: Windows Vista Home Premium 32 bit system
    CPU: AMD Turion 64 x2 Mobile Technology TL-58 1.9 GHz
    RAM: 1918 Mb
    Hard Drive Space: 200 GB, 22 GB used.
    Video: DirectX 10, 128 Mb, ATI Radeon X1200
    Sound: Realtek High Definition Audio
  12. kimsland

    kimsland Ex-TechSpotter Posts: 13,810

    Those specs are ok. And about 100X what theSims asks for!

    Although I'd update the 128Meg Video Card to 512Meg, but still way above minimum specs.

    Did the other post supplied, shed any light ?
    So far, this is two with similar issues. I wonder if a game patch is required, it's very strange.
  13. porsche911r

    porsche911r TS Rookie Posts: 37

    I think dx10 is only activated when u turn the shaders to max isnt that correct?? because i noticed a big difference on nfs pro street when i turn it off.
  14. bomberman85

    bomberman85 TS Rookie

    Similar Issue

    I don't know what's wrong with my Sims game, the only thing that won't display is the graphics on the computers and tv's and such that loop whatever animation format that is... my pc specs are:

    AMD Athlon(tm) 64 X2 Dual Core Processor 5200+ (2 CPUs), ~2.7GHz
    2046MB RAM
    ATI Radeon HD 2600 XT Driver Version: 7.14.0010.0555 (English)

    I've tried uninstalling the game and reinstalling, and I wouldn't assume the drivers are causing the issue?
  15. martindeck

    martindeck TS Rookie Topic Starter Posts: 26

    I've searched through similiar issues, and I found out that all of those who have the same issues have ATI based graphics card. Maybe, It's the card's Catalysts Control Center? Possible.
  16. AlbertLionheart

    AlbertLionheart TechSpot Chancellor Posts: 1,997

    I have found ATi cards often have problems with the latest games. Trouble is we don't know that when we buy the card!
  17. kimsland

    kimsland Ex-TechSpotter Posts: 13,810

    Thanks martindeck, I wonder if AlbertLionheart would like to installl the game.
    Although most of these members with problems, say it use to work ok.
    Maybe it's the latest drivers?
  18. AlbertLionheart

    AlbertLionheart TechSpot Chancellor Posts: 1,997

    I have nvidia cards so would not expect to have a problem!
  19. martindeck

    martindeck TS Rookie Topic Starter Posts: 26

    Thanks, kimsland.
    It couldn't be the device drivers. I already downloaded the latest device drivers for my card and the ATI's latest CCC which is 8.1.

    I also bought The Sims Pet Stories as they were said to be "Lap-top" friendly, since I am using a laptop, and alas, The Sims even in a "laptop friendly" version is still hostile to mine...

    Dissappointing... I am a big fan of Maxis... but then... Well, If there is no solution to this, I can wait for The Sims 3. :D
  20. bomberman85

    bomberman85 TS Rookie


    This is what it looks like on my computer. Everything else in the game is perfect, smooth scrolling, but the little animations on the darn tv's and computers when you try to play the pixel games...

    Edit: it says I need 3 posts first...
  21. bomberman85

    bomberman85 TS Rookie

    3rd post...
  22. bomberman85

    bomberman85 TS Rookie


    Sorry for the spam, i wanted to put it all in one post...
  23. kimsland

    kimsland Ex-TechSpotter Posts: 13,810

    bomberman85 do you have an ATi card

    Also instead of imageshack, next time just attach a pic (using the paperclip icon - inside a new post)
  24. bomberman85

    bomberman85 TS Rookie

    yes I have the Ati Radeon HD 2600 XT
  25. martindeck

    martindeck TS Rookie Topic Starter Posts: 26

    Well, I experimented with ATI Catalyst Control Center and The Sims 2' graphic settings and I came across with something. the Graphic corruption is caused by vertical synchronization, and vertical refresh rate.

    How did I know? I turned ATI's Wait for Vertical Refresh to Always off, and, I can use the cheat "vsync off/on" in the Sims 2 to make the corruptions disappear.

    Anyone has any suggestions...? EA isn't responding....
Topic Status:
Not open for further replies.

Add your comment to this article

You need to be a member to leave a comment. Join thousands of tech enthusiasts and participate.
TechSpot Account You may also...