I built my computer about a month ago—it’s nothing special. I’m running an Intel Pentium D 820 on an Asus P5W DH Deluxe motherboard. For a videocard, I’m rocking a BFG 9800 GTX.

I stumbled upon the System Information at the bottom-left corner of the Nvidia Control Panel recently. When I clicked it, I took note of the plethora of information on the 9800 GTX. What caught my eye was the very last line: BUS: PCI Express x4. That seems off, given that my card uses an x16 interface. What gives?

—Juan Campos

Check out Juan's answer, after the jump!

My Tagan TG900-U96 Turbojet 900-watt PSU recently burned out. I returned it, but it was no longer being supported through the third-party vendor I got it from. The vendor sent me an Apevia Warlock 900-watt PSU to replace my Tagan. I swapped it out, but now when I turn on the computer it won’t boot all the way. I get power lights, and the keyboard and mouse light up, but the monitor never kicks on, nor do the other connected peripherals (external Zip drive, printer, and scanner).
What could be going wrong with my computer? I never had this happen with the Tagan. Could something have been corrupted when the original PSU died?

A couple weeks ago I received a Dell Inspiron 6400 from a friend of mine. I was told that he used Windex directly on the screen, which dripped into the bottom of the LCD (between the screen and the housing). It now has a small, permanent “white fire” pattern on the bottom-center of the LCD screen. It appears not to be a physical effect, as I cannot see it when the laptop is off, but I can see it even when the backlight is turned off.
What should I do to fix my display?