Directx

Hello I have recently installed Directx 11 onto my computer and after doing so have noticed that my system is not operating at the speed it used to be able to before the installation. I was wondering if there was any way I could get rid of the Directx or if there is any way you could assist me in this problem.

My OS is windows vista home premiumand is a 32-bit.

Thanks for anything you can do to help.
 

My Computer

I have tried system restore but it continually fails on me. I have also tried using different restore points. It gives me a message after the restore saying that the an unexpected error has occurred.
 

My Computer

My Computer

System One

  • Manufacturer/Model
    HP-Pavilion m9280.uk-a
    CPU
    2.30 gigahertz AMD Phenom 9600 Quad-Core
    Motherboard
    ASUSTek Computer INC. NARRA3 3.02
    Memory
    3582 Megabytes Usable Installed Memory (4 Gig)
    Graphics Card(s)
    ASUS NVIDIA Geforce GTS450
    Sound Card
    Realtek High Definition 7.1 Audio (HP drivers)
    Monitor(s) Displays
    HP w2408 24.0" (Dual monitor)
    Screen Resolution
    1920 * 1200, 1920 * 1200
    Hard Drives
    3*500 Gigabytes Usable Hard Drive Capacity
    Plus 2x USB (160Gig each) external HDD
    BluRay & DVD Weiters
    HL-DT-ST BD-RE GGW-H20L SCSI CdRom (Bluray RW) Device
    AlViDrv BDDVDROM SCSI CdRom (Blueray) Device
    TSSTcorp CDDVDW TS-H653N SCSI CdRom
    Internet Speed
    40 Meg
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