If your Compaq Presario CQ40-421AX is suffering one of these issues like wifi and bluetooth not working, no sound, blue screen, black screen or screen flickering, in most cases, they are probably caused by outdated, broken or missing Compaq Presario CQ40-421AX drivers. To clear out these driver related issues, you need to download and update HP Compaq Presario CQ40-421AX drivers for Windows 7.
Downloading Presario drivers for Windows 7, Windows 8 and Windows 10 varies according to the method you use. It could be time-consuming and difficult. If you prefer a more reliable and easier method, You can update, download or install CQ40-421AX drivers for Windows by clicking the links below.
Download HP Compaq Presario CQ40-421AX Drivers
If you need specific software or driver for your compaq presario cq40 421ax laptop. Some of the following drivers are compatible with your 64-bit Windows 7-based laptop.
Sound Driver |
Version |
|---|---|
| Download | IDT High Definition Audio CODEC 1.00 B |
VGA Driver |
Version |
| Download | ATI Mobility Radeon HD 3200/3450/4200/4330 Graphics 1.00 B |
Keyboard, Mouse and Input |
Version |
| Download | HP Quick Launch Buttons 6.50.12.1 |
| Download | ALPS Touchpad Driver 1.00 A |
| Download | ENE CIR Receiver Driver 1.00 A |
| Download | Validity Sensor Driver 1.00 A |
Network Driver |
Version |
| Download | Bluetooth Wireless Technology for Microsoft Windows 7 |
| Download | Broadcom WLAN Driver for Microsoft Windows 7 5.60.18.8 |
| Download | Realtek Family PCI-E Fast Ethernet NIC Driver 7.3.522.2009 |
Storage Driver |
Version |
| Download | AMD AHCI Compatible RAID controller 1.00 A |
| Download | JMB38X CardReader Driver 1.00 A |
Multimedia Software |
Version |
| Download | HP DVD Play Software 3.7.0.6908 |
Software – Security |
Version |
| Download | Digital Persona Fingerprint Reader 4.0.1.3749_64 A |
Software |
Version |
| Download | HP Advisor 3.3.12286.3436 |
| Download | LightScribe System Software 1.18.8.1 |
| Download | Recovery Manager Installer Patch for Windows 7 Upgrade 1.0.5 |
| Download | HP Wireless Assistant 3.50.10.1 |
Utility & Tools |
Version |
| Download | HP Support Assistant 5.2.9.2 |
Thank you for visiting this site. Hope this post can be a reference for you to update drivers for your Compaq Presario CQ40-421AX laptop. Do comment below on this page for more solutions if you still can’t download proper Compaq Presario CQ40-421AX drivers. Any other driver issues, please see Windows Driver Solutions on this site.