Hi there, I've been using this computer for months without problems, yet whenever I put a device into a PCI slot, it will start freezing randomly. The mouse will seize up, any sound that is playing will loop a very tiny section and sound horrible and jagged, and ctrl+alt+delete or any other keyboard shortcut does nothing. Restarting the computer seems to be the only solution. Sometimes it works for hours, sometimes it will freeze shortly after start up. It is an issue now because I am using a wireless network PCI card. I have had other PCI devices and they cause the same problem, so I am sure it is not just the wireless card. My theory is that any device in a PCI slot causes it to have errors. I have checked to make sure I have the latest drivers for all my hardware. Heres my specs: OS: Windows XP Home SP3 Motherboard: Asrock 775 Dual-VSTA CPU: Intel Pentium D 2.66 GHZ RAM: 2 512MB sticks, 166mhz DDR GFX: Nvidia Geforce 5200FX PSU: 250 watt, unsure of model And the wireless card is a TP Link TL-WN553AG Thanks for any help.