I was trying to download AVG 8.0 and it has this error 0x800736b1. I had to delete my AVG 7.5 and now my computer has no protection on it.

<p>AVG offers a number of compelling features and the right technology to keep your PC protected. As one of the best antivirus software products reviewed, AVG offers a great solution that delivers advanced protection and simple use. But apart from these AVG have some advantages and Disadvantages.<br /> <p> <br /> <p>Advantages<br /> <ul> <li> Protection: - AVG Anti-Virus is fully armed to protect your computer from threats from a number of angles. The software includes antivirus and antispyware protection, as well as complete online protection from harmful sites and downloads.</li> <li> Ease of Installation: - AVG Anti-Virus is easy to download and install. The installation is straightforward and doesn't require a restart. And while it's not the fastest, it's relatively quick and performs an update immediately.</li> <li> Improved features: - Though you can download AVG protection software freely, but the security software is by no means ineffective.</li> <li> It's improved features like Link Scanner, ID Protection makes it the most effective scanner.</li></ul> <p> <br /> <p>Disadvantages:-<br /> <p>When uninstalling AVG version 7 or 8 in Windows XP/Vista and attempting to install other anti-virus programs such as Kaspersky Anti-Virus or Norton Antivirus, the latter programs will not install.<br /> <p>Instead, they show an "incompatible software installed" error even if the uninstalled software has been removed using the control panel.<br /> <p> <br /> <p>This happens because software that updates and changes can add registry entries that were not added when the product was originally installed.<span> </span>A signature update dated November 9, 2008, crippled some computers, as it allowed the software to treat "user32.dll", a major component of Windows XP/Vista, as a Trojan and advised users to delete it. Users who deleted the file in question were put on a continuous reboot loop. The problem was rectified a few days later with a new signature database and further safeguards were added to the product.