. Professional support by Acer trained technicians. Offered via e-mail or live chat, typical response time is 1-2 hours. Hardware & software problems. Upgrades & specifications. Spare parts search. Only $50.00 USD $19.95 USD per incident, includes unlimited e-mails / chats. Click Add to cart, then View cart, then. Acer Aspire 5600U AverMedia TV Tuner Driver 1.3.64.107 Upgrade for Windows 8 x64 2013-03-07 Acer Aspire 5600U AverMedia TV Tuner Driver 10.2.0.68 Upgrade for Windows 8 x64 2013-03-07 Windows 8.

Editors Liked

• Thin profile and sleek design
• Simple yet flexible stand
• Crisp 23-inch display with touch support
• Good ergonomics/tilt angles
• HDMI in and out
• Wireless keyboard and mouse
• Good performance
• Responsive touch interface
• Windows 8 looks and performs exceptionally

Editors Didn't Like

• Lackluster performance
• Littered with bloatware
• No Blu-ray drive
• Lots of preloaded programs
• Gesture control is gimmicky
• Slower performance than other midrange AiO desktops
• Audio could have been better
• Bundled mouse feels a bit flimsy
• Unit can heat up quickly
• OSD buttons can be a bit hard to reach

Expert reviews and ratings

By Maximum PC on 60

The Acer Aspire 5600U is a slim and somewhat-sexy all-in-one. It features a 1.3-inch-thin chassis and a 23-inch display atop a clear-plastic base, giving the illusion that it's floating in air. Once you get past the aesthetics, however, you'll find that...

By micromart.co.uk on 60

Windows 8 is inspiring many PC companies to widen their ranges with touch-enabled computers. The 5600U is an all-in-one desktop system, where the computer is fused to the screen and to make best use of Windows 8, Acer has added a 23”...

By Computer Shopper on 70

An elegantly thin design makes the Acer Aspire 5600U-UB13 an all-in-one to consider for light duty in your home. Don't be tempted by its sleekness should you require anything approaching heavy lifting....

By TechReviewSource on 60

The Acer Aspire A5600U-UB13 is a nice looking all-in-one desktop PC with a solid feature set and acceptable, though not exceptional performance. It's a decent all-in-one desktop at a decent price, but there are better systems out there for not much more...

By Channel Pro on 60

Distinctive design and reasonable performance; misses out on an award by a whiskerRating: 3Average: 3 (1 vote) Webcams aren’t usually the most exciting part of a computer, but Acer’s Aspire 5600U does something different with its 2-megapixel snapper –...

By PC Pro on 67

Distinctive design and reasonable performance; misses out on an award by a...

By TechRadar on 80

The pay-off for the price tag is the design, and the Acer can quickly transform a spare room into a slick office or, similarly, go unnoticed as a small TV in the corner.

By TechRadar on 80

The first thing that hits you is the style. The Acer Aspire 5600U is a slim machine that has more in common with a modern TV than a traditional PC. The screen measures 23 inches, has an HDMI input for your DVD player or games console and, crucially,...

By PC Advisor on 70

This is a good-looking all-in-one at a sub-£1000 price, but it’s noticeably slow and the nVidia graphics aren’t enough to elevate gaming performance to truly playable levels. It offers a large bundle of pre-installed software and comes with good...

By Expert Reviews on 60

This PC looks great and can play games, but you can get faster computers for less...

By CNET UK on 70

The Acer Aspire 5600U packs a vivid high-definition touch-enabled screen into a slim and attractive body, making it a good choice for family computing in the living room. It's sadly let down by only average performance that doesn't help justify the...

By tbreak.ae on 80

So is the Acer Aspire 5600U a definitive desktop replacement? Well for one thing, it’s certainly more attractive than having a hulking tower PC hidden under your desk. It’s also got some decent specifications and will run most applications and games...

By uk.hardware.info on

We liked the design of the Acer Aspire 5600U, it has its own look and feel, even if we're not fans of so much plastic. It's cool though that Acer created a matching keyboard and mouse. Our main complaint is the weak hardware. Using notebook...

By Computeractive on

The Acer Aspire 5600U is an all-in-one desktop PC with a striking appearance. The slender black and silver plastic design has a transparent stand so it almost appears to be floating on your desk. While swivelling the PC is reasonably easy, the stiff...

Are you facing an error that’s keeping your ASUS computer from booting into Windows? You are stuck in the UEFI screen with a Secure Boot Violation error message that reads “Invalid signature detected. Check Secure Boot Policy in Setup”.

The problem is not specific to ASUS users. It could also occur on other laptop brands.

Your first reaction, naturally, might be to panic. No one likes encountering a system issue. But put your mind at ease. Don’t lose hope just yet.

With the troubleshooting steps we’ll provide in this guide, you will be able to fix this error in the comfort of your home or office. So, there would be no need to plan a visit to your PC repair expert.

What Is The “Invalid Signature Detected” Error?

The issue began on Windows 7, after the KB3133977 update was released. KB3133977 was meant to fix a problem that prevented drive encryption by BitLocker.

The purpose was achieved but coincidentally, the update also resulted in the “Invalid signature detected” error on ASUS PCs.

This happened because the Secure Boot Technology present in ASUS motherboards is not compatible with some versions of Windows. It is therefore not fully enabled on machines running on the OS.

But once the update is installed, Secure Boot gets fully activated. When the PC is turned on, and the OS that’s detected is not compatible with the feature, a boot is prevented and the Secure Boot Violation error message is displayed.

Although the problem was later patched by Microsoft, it somehow still exists in later versions of Windows, including Windows 10.

The error can occur in any of the following scenarios:

• After the installation of a secondary operating system on your PC (dual boot configuration).
• After flushing or resetting UEFI/BIOS to factory settings.
• After upgrading to a new version of Windows.
• You fixed in a new hard disk drive (HDD) or solid state drive (SSD).
• After the Digital Signature Driver Verification (Windows Driver Signature Enforcement) has been enabled.

Whatever the cause may be, let’s go ahead and see how to fix “Secure boot violation – invalid signature detected” on Windows 10.

How to Get Rid Of the “Secure Boot Violation – Invalid Signature” Error on Windows 10

To fix the issue, you’ll need to head to BIOS or UEFI (depending on the one your laptop uses. The latter is present in more modern computers) and make some adjustments.

Note:

The method of accessing the BIOS/UEFI screen will vary based on the brand of your PC. But it usually involves restarting your computer and pressing any of the following keys repeatedly: F1, F2, Fn + F2, or Del. Another way is to click OK on the error message.

Step 1: Set Boot Priority or Disconnect External Drive

If you encountered the “Secure Boot Violation” error when an external drive (whether a hard drive or USB flash drive) was connected to your PC prior to start up, access the BIOS/UEFI settings and configure boot priority (boot order). Make sure the system is loading from the internal hard disk or Windows Boot Manager and not from Removable Devices. See that Hard Drive comes first in the Boot order.

To make things easier, simply turn off the computer, unplug the external drive, and reboot the system.

In any other case, you’ll have to perform the following fixes:

1. Disable Secure Boot Control
2. Enable CSM and disable Fast Boot
3. Set all keys under Key Management to Not Installed
4. Disable Driver Signature Enforcement

Step 2: Disable Secure Boot Control

This is often sufficient in resolving the “Invalid signature Detected” error. Here’s what you have to do:

1. Enter BIOS.
2. From the main tab, use the right arrow key (→) to navigate to the Security tab, Authentication tab, or Boot tab. You’ll find the Secure Boot menu under one of them (depending on your BIOS/UEFI setup utility). Use the down arrow key (↓) to select the option and then press Enter.
3. Select Secure Boot Control.
4. Choose Disabled.

Note:

There’s another way to disable Secure Boot. If there is an option that says “OS type” in the menu from No.2 above, navigate to it and select “Other OS”. That should do the trick. It doesn’t matter that your PC is running on Windows operating system.

Step 3: Enable CSM and Disable Fast Boot

After completing the procedure in Step 2:

1. Look for the Fast Boot option. It will be located under the Security, Authentication, or Boot tab depending on your BIOS.
2. Select the option and press Enter.
3. Now, choose Disable.
4. Move down to Launch CSM and choose Enabled.
5. Go to the Save and Exit tab.
6. Select Save Changes and Exit.
7. Choose Yes to confirm the action.

Note:

You can also save the changes made to the BIOS by pressing F10 on your keyboard. However, this also depends on your device.

When you are done performing the above fixes, the error in discussion should now be resolved. However, if it persists, enter BIOS or UEFI once again and try the solutions below.

Step 4: Set all keys under Key Management to Not Installed

The “Invalid signature detected” error might happen after UEFI/BIOS update. In this particular scenario, the boot loader is now able to recognize a mismatch between the operating system and saved keys. You’ll then have to reset the keys to fix it.

Here’s how to do so:

1. Enter BIOS and head to the Security tab.
2. Locate Key Management and select it.
3. Set all the keys to Not Installed.

Step 5: Disable Driver Signature Enforcement

If the issue still persists at this point, it could be that there are unsigned device drivers that are conflicting with the system protection module.

To resolve this, you’ll have to disable the digital signature verification of drivers.

Here’s how:

1. To access the recovery environment, boot Windows 10 from the installation media.
2. Press Shift + F10 once the installation screen comes up.
3. Now, to permanently disable driver signature enforcement, input the following lines in the Command prompt window and press Enter after each one:

• bcdedit.exe -set loadoptions DISABLE_INTEGRITY_CHECKS
• bcdedit.exe -set TESTSIGNING ON

The system should be able to boot afterwards without any setback. You will find a “Test Mode” watermark at the bottom-right corner of your PC screen. This indicates that the installation of unsigned or unverified drivers is no longer restricted.

Now, you’ll need to locate and remove the unsigned drivers that caused the “Invalid signature detected” error. Follow the steps below to achieve this:

1. Press the Windows logo key + R on your keyboard to open the Run dialog.
2. Type sigverif into the text box and click OK or press Enter. This will open the File Signature Verification utility.
3. Click the start button.
4. A full-system scan will begin. All unsigned drivers that are installed on your computer will be detected.
5. Once the scan is complete, you’ll be presented with a list. Uninstall the problematic drivers through Device Manager and then install a signed version that’s up to date.

We highly recommend you use Auslogics Driver Updater to get the latest manufacturer-recommended versions of your device drivers. The tool detects outdated, missing, and faulty drivers after running a full-system scan. Afterwards, it automatically downloads and installs the signed and verified versions.

Since it identifies the specifications of your computer, you don’t have to worry about installing the wrong drivers.

No doubt, the tool offers a fool-proof service that protects you from experiencing such inconveniences as the “Secure Boot Violation – Invalid Signature” error. Use it today and kiss driver-related issues on your PC goodbye. Ensure your computer is in its best state at all times.

Note:

Keep in mind that Driver Signature Enforcement is an important security protocol. Without it, your system will be under serious safety threats (becoming vulnerable to virus and malware attacks via untrusted drivers). You therefore have to enable the feature once again. Follow these easy steps to get it done:

• Press the Windows logo key + R on your keyboard to open the Run dialog.
• Type CMD in the text box and press Enter or click the OK button. This will open the Command Prompt window.
• Enter the following commands and press Enter after each one:
• exe /set nointegritychecks off
• bcdedit /set testsigning off
• Close the window and reboot your computer.

By the time you’re reading this paragraph, it is expected that the issue that led you to this guide should be successfully resolved. You can now use your computer without any more setbacks.

We hope you’ve found this content useful.

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