We have around 200 laptops within our organization. We have installed Trend Micro on our servers/laptops within the company.
The issue is that we have a model of the HP Laptop (6730b) that doesn't play well with the AV solution.
What happens is if we try to power up the laptop without the power adapter attached, the computer will get a black screen during the bootup process and will never recover (hard shutdown only). If I take the exact same laptop and have the power attached, the computer runs perfect. I can unplug the power and have no issues.
We have done clean installs on the OS (XP Pro) and have it fully patched and it will be running perfectly. The Trend is fully patched on the server and after I push out the application that is when the issue occurs. If I remove the AV, the computer has no issues with the power unplugged at startup.